普通气体常数R的物理意义是什么

计算方法：时间常数τ=RC、时间常数τ=L/R。（时间常数用τ表示（tao四声））1、时间常数是指电容的端电压达到最大值的1/e，即约0.37倍时所需要的时间。2、在电阻、电容的电路中，它是电阻和电容的乘积。3、RLC暂态电路时间常数是在RC电路中,电容电压Uc总是由初始值UC(0)按指数规律单调的衰减到零,其时间常数=RC。4、求时间常数时，把电容以外的电路视为有源二端网络，将电源置零，然后求出有源二端网络的等效电阻即为R，在RL电路中，iL总是由初始值iL(0)按指数规律单调的衰减到零，其时间常数=L/R。扩展资料时间常数除了应用在电路中，还应用在电机、传热学、放射性测井仪器、心电图机方面。1、电机的机械时间常数电机的机械时间常数是指此电机在额定电压给定，空载情况下，转速达到额定转速的63%时所需的时间。此参数衡量的主要是电机的启动特性，如空心杯的电机，一般都是1-50ms左右。2、传热学的时间常数热电偶的时间常数是指采用集总参数法分析时，物体过余温度降到初始过余温度的36.8%所需要的时间。在用热电偶测定流体温度的场合，热电偶的时间常数是说明热电偶对流体温度变动响应快慢的指标。3、放射性测井仪器中的时间常数放射性测井仪器中计数率表的时间常数由积分回路中电阻和电容的乘积确定，其值根据计数率、测井速度和要求的测量精度选定。计数率低,则需较大的时间常数才能保证必要精度；但时间常数大，仪器惰性大，测井速度即相应降低。4、心电图机的时间常数心电图机的技术指标之一，是指标准灵敏度方波从最高(100%)幅值下降到37%幅值时所需要的时间，单位是秒。时间常数与心电图波下降速率有关,时间愈长幅值下降愈慢,反之越快。参考资料来源：百度百科-时间常数

R=rmm,为每kg理想气体的气体常数,随气体的分子量变化而变化,m为每千摩尔气体质量,而rm是每千摩尔理想气体的气体常数,称为通用气体常数,也称普适气体恒量,不会随气体的分子量变化而改变 R=8.314J/mol*K

　　1、热力学常数R　　理想气体状态方程：pV=nRT　　已知标准状况下，1mol理想气体的体积约为22.4L　p=101325Pa，T=273.15K，n=1mol，V=22.4L=0.0224m^3 　　R=8.314，单位J/（mol*K）　　2、阿伏伽德罗常数　　在物理学和化学中，阿伏伽德罗常数（符号：NA或L）的定义是一个比值，是一个样本中所含的基本单元数（一般为原子或分子）N，与它所含的物质量n（单位为摩尔）间的比值，公式为NA=N/n。因此，它是联系一种粒子的摩尔质量（即一摩尔时的质量），及其质量间的比例常数。阿伏伽德罗常数用于代表一摩尔物质所含的基本单元（如分子或原子）之数量，而它的数值为：6.02x10^23/mol　　3、玻尔兹曼常量　　玻尔兹曼常量是热力学的一个基本常量，记为“K”，数值为：K=1.3806505×10^-23J/K，玻尔兹曼常量可以推导得到，理想气体常数R等于玻尔兹曼常数乘以阿伏伽德罗常数。

摩尔气体常数

R称为理想气体常量。在公式pV=nRt中，如果压强、温度和体积都采用国际单位（SI），R=8.314帕·米3/摩尔·K。如果压强为大气压（1 atm），体积为L，则R=0.0814大气压·升/摩尔·K。

电路中的时间常数L/R中的R是怎么看的简单的方法，考虑一下，戴维宁电路中等效电阻如何计算的，就知道是怎么回事了。做法是，把动态元件移除，对剩下的一端口电路求等效电阻即可，由于剩下的一端口电路是含源网络，所以先将独立源置0（即电流源开路，电压源短路），然后对该网络求输入电阻就是要求的等效电阻！对于该问题则有Req=5//5=2.5。这道题的电流稳态值为什么是6A对于直流电路稳态，电感相当于短路，可以画出对应的等效电路：假设最左支路电流为i1.方向向上，最右支路电流为i2.方向向上。由KCL知：i=i1+i2;在左回路由KVL可知5i1=10 i1=2A;在右回路由KVL可知5i2=20 i2=4A;所以i=4+2=6A

R是一定的,约为8.31441±0.00026J/(mol·K） 通常取8.314J/(mol·K）

R是一定的，约为8.31441±0.00026J/(mol·K） 通常取8.314J/(mol·K）

化学中R表达的信息很丰富，最常见的是以下几种：1.理想气体状态常数，取值8.3142.有机化学里代表烷基3.对映异构里表示R构型

R*=8.31J·mol-1·K-1,即为普适气体常数.R*对任何气体成分都适用.

既然 PV=nRT 1 Nm^-3 x 1 m^3 就等于 1 mol x 1 K x R R = 1 Nm^-3 x 1 m^3 / 1 mol x 1 K R = 1 N mol^-1 K^-1 因你只问 单位 不计 R 的数值 如你想计 只要代入其他正确数值 如 1 mol at 298 K V = 0.24 m^3 感谢阁下的回报 其实我打错了压强的单位 不关回答者事 答案中有三个错误： (1) 压强的单位是 N m^-2（1 N m^-2 = 1 Pa），而不是 N m^-3。这错误是由于原来题目的错误引起。 (2) R 的正确单位是 J mol^-1 K^-1（或 N m mol^-1 K^-1），而不是 N mol^-1 K^-1。 2008-10-31 16:00:36 补充： (3) 利用 PV = nRT，在常温常压下（298 K 101000 Pa），1 mol 的理想气体，所占的体积是 0.02453 m^3 或 24.53 dm^3。在会考程度所用的 24 dm^3 只是一个方便计算的近似值。 其实，24.53 较接近 25 dm^3，是用传统习惯用 24 dm^3 而已。

R=8.314J·mol-1·K-1.

pV=nRT这是克拉伯龙方程，即理想气体的状态方程。其中p为气体压强，单位帕斯卡（帕Pa)。V为气体体积，单位为立方米（m3）。n为气体的物质的量，单位为摩尔（摩mol）。T为体系的热力学温度，单位开尔文（开K）。R为比例常数，单位是焦耳/（摩尔·开），即J/（mol·K）。在摩尔表示的状态方程中，R为热力学常数，对任意理想气体而言，R是一定的，约为8.31441±0.00026J/(mol·K）。如果采用质量表示状态方程，pV=mrT，此时r是和气体种类有关系的，r=R/M，M为此气体的平均分子量。所以表示热力学方程的PV=nRT中R位热力学常数R≈8.314J/(mol·K）。

在有机化学中“R-”表示烃基或烷基的通式。例如，R-OH代表的就是醇类。在无机化学中R常代表化合物中的金属元素。但在写金属化合物分子式是，R不能写成R-，否则就溶液容易与有机化学中的R-混淆了。例如某金属的氢氧化物ROH，不能写成R-OH。还有在气态方程式中R代表常数项。

R=8.314帕米3/摩尔·K。克劳修斯从热力学理论论证了克拉珀龙方程，故这个方程又称克拉珀龙－克劳修斯方程。通常用下式表示：PV=nRT……①所有气体R值均相同。如果压强、温度和体积都采用国际单位（SI），则P表示压强，单位Pa；V表示气体体积，单位立方米；n表示物质的量，单位mol；T表示热力学温度，单位K（开尔文）R表示气体常数，单位J·mol^-1·K^-1或kPa·L·K^-1·mol^-1。R=8.314帕米3/摩尔·K。因为n=m/M、ρ=m/v（n—物质的量，m—物质的质量，M—物质的摩尔质量，数值上等于物质的分子量，ρ—气态物质的密度），所以克拉伯龙方程式也可写成以下两种形式：Pv=m/MRT……②和PM=ρRT……③以A、B两种气体来进行讨论。1）在相同T、P、V时：根据①式：nA=nB（即阿伏加德罗定律）摩尔质量之比=分子量之比=密度之比=相对密度）。若mA=mB则MA=MB。2）在相同T·P时：体积之比=摩尔质量的反比；两气体的物质的量之比=摩尔质量的反比）物质的量之比=气体密度的反比；两气体的体积之比=气体密度的反比）。3）在相同T·V时：摩尔质量的反比；两气体的压强之比=气体分子量的反比）。

1、热力学常数R。 物理化学意义：理想气体状态方程：pV=nRT，已知标准状况下，1mol理想气体的体积约为22.4Lp=101325Pa，T=273.15K，n=1mol，V=22.4L=0.0224m^3，R=8.314，单位J/（mol*K）。 2、阿伏伽德罗常数。 物理化学意义：在物理学和化学中，阿伏伽德罗常数（符号：NA或L）的定义是一个比值，是一个样本中所含的基本单元数（一般为原子或分子）N，与它所含的物质量n（单位为摩尔）间的比值，公式为NA=N/n。因此，它是联系一种粒子的摩尔质量（即一摩尔时的质量），及其质量间的比例常数。阿伏伽德罗常数用于代表一摩尔物质所含的基本单元（如分子或原子）之数量，而它的数值为：6.02x10^23/mol。 3、玻尔兹曼常量。 物理化学意义：玻尔兹曼常量是热力学的一个基本常量，记为“K”，数值为：K=1.3806505×10^-23J/K，玻尔兹曼常量可以推导得到，理想气体常数R等于玻尔兹曼常数乘以阿伏伽德罗常数。

你指的是气体压强公式吗？pv=nrtc=v/tp1v1/t1=p2v2/t2p:压强v：气体体积n：气体物质的量r：常数，8.31t,t:温度t=t+273.15c：比热pv=nrt所有理想气体状态下都成立.因为pv/t=nr,所以对于同一理想气体系统，在不同温度t,压强p，体积v的情况下，由于物质的量n没变，r为一常数，就满足下面p1v1/t1=p2v2/t2的等式。另外，此等式也适用于物质的量相等的不同理想气体之间。

pV=nRT这是克拉伯龙方程，即理想气体的状态方程。其中p为气体压强，单位帕斯卡（帕Pa)V为气体体积，单位为立方米（m3）n为气体的物质的量，单位为摩尔（摩mol）T为体系的热力学温度，单位开尔文（开K）理想气体方程中的R值：R为比例常数，单位是焦耳/（摩尔·开），即J/（mol·K）在摩尔表示的状态方程中，R为热力学常数，对任意理想气体而言，R是一定的，约为8.31441±0.00026J/(mol·K）。如果采用质量表示状态方程，pV=mrT，此时r是和气体种类有关系的，r=R/M，M为此气体的平均分子量所以，表示热力学方程的PV=nRT中R位热力学常数R≈8.314J/(mol·K）。

玻尔兹曼常数k与r的关系为k＝R/NA。玻尔兹曼常数和R的关系：k＝R/NA。即普适气体常量与阿伏加德罗常数之比，虽然这是两个常量的组合，但是玻尔兹曼常数具有更深刻的物理意义，统计力学和热力学中都有存在。T的温度是开尔文，从温度间隔来说，1开尔文=1摄氏度，他们的来源都是用水的冰点和沸点之间间隔的100等分。能量的单位焦耳，定义是1牛的力作用1米做的功。k的作用是把两个物理量联系起来。在微观的粒子运动和宏观统计行为之间的数量级关系。需要什么数量级的微观粒子，才能够表现出宏观的热力学行为。扯得更远一点，这个常数描述的是，意识依赖的宏观物质，与微观世界之间的数量级的关系。需要什么量级的微观粒子，才能够支撑意识活动的存在。玻尔兹曼常数的计算：r=rmm,为每kg理想气体的气体常数,随气体的分子量变化而变化,m为每千摩尔气体质量,而rm是每千摩尔理想气体的气体常数,称为通用气体常数,也称普适气体恒量,不会随气体的分子量变化而改变。理想气体状态方程：pV=nRT已知标准状况下,1mol理想气体的体积约为22.4L把p=101325Pa,T=273.15K,n=1mol,V=22.4L代进去得到R约为8.314,单位J/mol*K玻尔兹曼常数的定义就是k=R/Na

Raise awareness of提高认识双语对照例句:1.Now some young activists, notably in university environmental clubs, are campaigning toraise awareness of pollution. 现在一些年轻的活动人士，主要是大学环保俱乐部的活动人士，正在努力提高人们的环保意识。

Raise-awareness-of提高认识awareness[英][u0259u02c8weu0259nu0259s][美][u0259u02c8weru0259nu0259s]n.察觉，觉悟，意识; 例句1、Programs to promote diversity and cultural awareness within the industry旨在该行业内促进多样性和提升文化意识的计划2、That kind of situational awareness is critical& knowing your audience and asking the right questions and providing the right information your audience needs to get things done.那种情境意识至关重要&了解观众，同时提出恰当的问题，提供你的观众完成任务所需要的、适合的信息。3、A historical awareness also imparts a sense of continuity.历史意识也显示了一种连贯性。4、What I particularly like about RTC is the awareness capability it provides, as well as the process customization potential.我特别喜欢RTC的地方是它提供的察觉功能，以及过程定制潜能。5、The issue of awareness is an important one.不能察觉是一个很重要的问题。

raise的固定搭配如下：1、raise awareness：提高意识。例如：We need to raise awareness of the importance of environmental protection.（我们需要提高人们对环保重要性的意识。）2、raise funds：筹集资金。例如：The charity organization is trying to raise funds for the homeless.（这个慈善组织正试图为无家可归者筹集资金。）3、raise a question：提出问题。例如：The article raises some important questions about the future development of the company.（这篇文章提出了一些关于公司未来发展的重要问题。）4、raise objections：提出反对意见。例如：Several members of the team raised objections to the new proposal.（团队中的几个成员对新提议提出了反对意见。）5、raise standards：提高标准。例如：The company is committed to raising standards in the industry.（这家公司致力于提高行业标准。）6、raise a family：养育家庭。例如：She raised a large family and worked full-time at the same time.（她养育了一个大家庭，同时还全职工作。）7、raise the bar：提高标准。例如：The company is trying to raise the bar in terms of customer service.（这家公司正试图在客户服务方面提高标准。）8、raise expectations：提高期望值。例如：The success of the previous project has raised expectations for the new one.（上一个项目的成功提高了对新项目的期望值。）9、raise the issue：提出问题。例如：The president raised the issue of climate change during the meeting.（总统在会议上提出了气候变化的问题。）10、raise the alarm：发出警报。例如：The fire alarm raised the alarm and everyone evacuated the building immediately.（火警报警声响起，所有人立即疏散了建筑。）11、raise one"s voice：意为“提高嗓门”，指大声说话或呼喊。例如：He had to raise his voice to be heard over the noise of the crowd.（他不得不提高嗓门才能在人群嘈杂的声音中被听到。）12、raise a flag：意为“升起旗帜”，指用旗帜或标志来表达某一立场或信仰。例如：The protesters raised a flag to show their support for democracy.（抗议者升起旗帜表达他们对民主的支持。）13、raise an eyebrow：意为“挑起眉毛”，指表示惊讶或不满。例如：His behavior raised a few eyebrows among his colleagues.（他的行为在同事中引起了一些惊讶的眼神。）14、raise the bar：意为“提高标准”，指将期望或要求的水平提高。例如：The company is constantly raising the bar in terms of quality and innovation.（这家公司一直在提高产品的质量和创新水平。）15、raise a toast：意为“举杯祝酒”，指在庆祝场合中举起酒杯表示祝福或致辞。例如：Let"s raise a toast to the newlyweds.（让我们为新人举杯祝福。）

1、学校一片绿，学生心中一片春。 The school is green and the students are in the middle of spring. 2、环境保护，人人有责。 Environmental protection is everyone"s responsibility. 3、人的生命是有限的，保护环境是无限的。 Man"s life is limited, and the environment is infinite. 4、坚持团结治水，构建和谐流域。 Uphold unity and water control and build a harmonious watershed. 5、从小树立环保意识，做绿色人生使者。 From childhood to environmental awareness, green life messenger. 6、为了地球的生命，拯救我们的环境。 For the life of the earth, save our environment. 7、郁郁葱葱，创新州。 Lush and innovative states. 8、绿化环境，净化心灵。 Greening the environment and purifying the mind. 9、尊崇自然，敬畏生命。 Reverence for nature, reverence for life. 10、珍惜自然资源，共营生命绿色。 Cherish natural resources and share the green of life. 11、绿色是一种品牌，绿色是一种时尚，绿色是生命力的象征。 Green is a brand, green is a fashion, green is a symbol of vitality. 12、但存方寸地，留与子孙耕。 But keep fangcunde and stay with the child sungeng. 13、珍惜资源永续利用，绿化环境净化心灵。 Cherish resources, sustainable use, green environment, purify the mind. 14、芳草依依，大家怜惜。 The grass is clinging, and everyone feels pity for it. 15、为了校园一片绿，珍惜脚下每颗草。 In order to campus a green, cherish every grass at the foot. 16、学会做人，学会学习，保护自然。 Learn to be human, learn to learn, and protect nature. 17、人类离不开花草，就像婴儿离不开母亲的怀抱。 Human beings can not leave the flowering grass, just like the baby can not do without the mother"s arms. 18、坚持人水和谐，建设生态文明。 Adhere to harmony between man and water, and build ecological civilization. 19、为了美丽家园，请从小事做起。 For the beautiful homeland, please start with minor matters. 20、老毛病，要根治，小问题，要重视。 Solve old problems radically and treat small problems attentively. 21、提高环保意识，自觉保护环境。 Raise awareness of environmental protection, consciously protect the environment. 22、绿色消费，消费绿色。 Green consumption, green consumption. 23、小草对您微微笑，请您把路让一让。 The grass smiles at you, and will you please let the way pass. 24、环境卫生的洁净，有您的一份文明。 Clean environmental hygiene, you have a civilization. 25、与自然重建和谐，与地球重修旧好。 The reconstruction of harmonious with nature, and the earth reconciled. 26、鸟语花香，爱赏共享。 A shared love birds"twitter and fragrance of flowers. 27、当你不要我时，请把我送回家。 Please send me home when you don"t want me. 28、美化校园环境，就是美化我们的生活。 To beautify our campus environment is to beautify our life. 29、栏杆拦人，人自拦心。 Railings block people from the heart. 30、娇娇小草，请足下留情。 Jiao Jiao grass, please you. 31、保护绿色摇篮，你行，我能。 Protect the green cradle, you can, I can. 32、要想校园净又美，健康文明记心里。 Want to campus net and beauty, health, civilization remember. 33、珍惜水，保护水，让水造福人类。 Cherish the water, protect the water, and let the water benefit the human race. 34、保护环境，刻不容缓。 It is imperative to protect the environment. 35、全面规划，统筹兼顾，推进水利协调发展。 Overall planning and overall planning to promote coordinated development of water resources. 36、鸟语花香的家园，需要我们共同去创造。 The birds"twitter and fragrance of flowers we need to create a common homeland. 37、我知盘中餐，粒粒皆辛苦。 I know Chinese food is hard. 38、愿君莫伸折枝手，鲜花亦自有泪滴。 Wish you not to stretch hand picked flowers, also own tears. 39、学校是我家，保护环境靠大家。校园是我家，卫生靠大家。 School is my home, protecting the environment depends on everyone. Campus is my home, health depends on everyone. 40、树木拥有绿色，地球才有脉搏。 Trees have green, and the earth has a pulse. 41、用好你的手，垃圾无处溜。 Use your hands, garbage everywhere. 42、美丽的校园，美丽的家，永远的美丽靠大家。 Beautiful campus, beautiful home, eternal beauty depends on everyone. 43、保护学校环境，共创学生圣地。 Protect the school environment and create a sacred place for students. 44、保护树木，就是保护我们人类。 To protect trees is to protect us. 45、小草青青，花香飘飘；青草鲜花，应当爱惜。 The grass is green and the flowers are fluttering; the grass and flowers should be cherished. 46、请脚下留情，别伤害一棵小草。 Please hold feet, don"t hurt a grass. 47、如果没有树木，世界将会暗淡无光。 If there are no trees, the world will be dim and dark. 48、只要给予一些爱，就能给你带来郁郁葱葱的绿荫。 Give a little love and it will give you a green shade. 49、科技发展无限好，只是地球太难堪。 The development of science and technology is infinitely good, but the earth is too embarrassing. 50、用我们的爱心，迎来校园的一片绿。 With our love, ushered in the campus of a green. 51、小草刚钻出地面，请自觉保护弱小。 The grass has just drilled out of the ground, so please protect the weak. 52、花香阵阵，鸟鸣声声。琅琅书声，浓浓情深。 The fragrance of flowers, the sound of birds singing. The sound of reading, strong love. 53、爱护绿化，就是保护自己。 To protect the green is to protect ourselves. 54、创建绿色学校，促进可持续发展。 Building green schools to promote sustainable development. 55、让河水更清澈，让家园更美好。 To make the river clearer and make our homes better. 56、节能源自心中，环境大家爱护。 Energy saving from the heart, the environment, we love. 57、少一个脚印，多一个生命。 One footprint, one life. 58、用我们的双手，保护我们的地球。 Use our hands to protect our earth. 59、保护一片绿色，净化一片天空。 Protect one piece of green, purify one sky. 60、保持地球生态平衡，就是保护人数自身。 Conservation of the earth"s balance is the protection of the numbers themselves. 61、赏花爱花花更美，观景惜景景更幽。 Flowers love flower is more beautiful, more secluded landscape view Xijing. 62、你珍惜我的生命，我还你一片绿荫。 You treasure my life, I give you a shade. 63、只有一个地球，人类应该同舟共济。 There is only one earth, and man should be in the same boat. 64、破坏环境，就是破坏我们赖以生存的家园。 To destroy the environment is to destroy the home we live in. 65、做地球妈妈的好孩子，保护她。 Be a good mother earth mother, protect her. 66、同建绿色校园，共享鸟语花香。 With the construction of a green campus, sharing birds"twitter and fragrance of flowers. 67、今天节约一滴水，留给后人一滴血。 Save a drop of water today, leaving a drop of blood for posterity. 68、清扫清洁坚持做，亮丽环境真不错。 Clean, clean, keep doing, beautiful environment, really good. 69、你来绕一绕，我来笑一笑。 You go around and I"ll smile. 70、每人少扔一张纸，地球就会更美丽。 Each person drops a piece of paper, and the earth will be more beautiful. 71、手上留情花自香，脚下留意草如茵。 Flowers from the hands of the benefit of incense, green grass at the foot of attention. 72、让校园阳光普照，让绿色神圣美妙。 Let the campus sunshine, let the green sacred wonderful. 73、土壤不能再生，防止土壤污染和沙化，减少水土流失。 Soil can not be recycled to Pvent soil pollution and desertification, and to reduce soil erosion. 74、让花儿含笑，让草儿传情，让心儿绽放。 Let the flowers smiling, let the feelings, let the heart bloom. 75、草木绿，花儿笑，空气清新环境好。 Grass green, flowers laugh, fresh air, good environment. 76、呼吸绿色，感恩生命。 Breathe green, apPciate life. 77、我们只有一个地球，拯救地球就是拯救未来。 We have only one earth to save the earth is to save the future. 78、拯救地球，一起动手。 Save the earth and do it together. 79、我们是幼苗，我们都需要呵护。 We are seedlings, we all need to take care of. 80、莫踏青草，勿采红花。 Don"t go hiking, don"t pick red flowers.

　　海洋污染使浮游生物死亡，海洋吸收二氧化碳能力减低，加速温室效应。那么关于海洋污染的 高三英语 作文 怎么写呢?下面是我推荐给大家有关海洋污染的 英语作文 ，供大家参考。 　　海洋污染英语作文篇一 　　Several problems are caused by the non-organic substance. We ought not to pour wastes into the ocean, because it not only pollutes the ocean, but also lead to a series of harmful consequence. 　　First and foremost, the non-organnic things, for instance, plastic bags, may kill fish and whales. 　　Second, fishes can"t digest them. 　　Finally, some of the rubbish is inherently toxic, they will posion marine life. 　　We must take actions to protect our whale from dying. One thing we should do is creating a better system of disposing of rubbish. 　　Another effective solution is making ships environmentally friendly. Sypermarkets shall stop the giving of plastic bags. 　　As a captain of the ship, you should spare no efforts to think more helpful ideas and stop dumping rubbish from now on. 　　We all need to raise awareness of these problems. It now becomes necessary that we must act now, before it is too late! 　　海洋污染英语作文篇二 　　The seas and oceans receive the brunt of human waste, whether it is by deliberate dumping or by natural run-off from the land. 　　In fact over 80% of all marine pollution comes from land-based activities and many pollutants are deposited in estuaries and coastal waters. 　　Here the pollutants enter marine food chains, building up their concentrations until they reach toxic levels. 　　It often takes human casualties to alert us to pollution and such was the case in Minimata Bay in Japan when many people died as a result of a pollutant building up in food chains. 　　A factory was discharging waste containing methyl mercury in low concentrations into the sea and as this pollutant passed through food chains it became more concentrated in the tissues of marine organisms until it reached toxic levels. 　　As a consequence 649 people died from eating fish and shellfish contaminated with mercury and 3500 people suffered from mercury poisoning. 　　海洋污染英语作文篇三 　　Sea pollution is becoming an increasing problem for our planet and we have a responsibility to reduce sea pollution. 　　I need to describe the problem. Our ship currently dumps all its rubbish into the sea.It"s easy to result in huge endanger. 　　First of all, Non-organic substances such as plastic bags kill fish and whales. Because fish get trapped and whales cannot digest them. Secondly some rubbish is inherently toxic. 　　I can suggest some solutions. First and foremost we can create a better system of disposing of rubbish for instance. 　　We ought to store rubbish. Next, we are supposed to make ships environmentally and friendly. 　　A case in point is that we should stop providing plastic bags. 　　We must act now before it is too late!海洋污染英语作文相关推荐： 1. 保护海洋环境的英语作文范文 2. 关于环境污染的英语作文4篇 3. 环境污染的英语作文 4. 关于水污染的英语作文 5. 关于河流污染的英语作文

Cultural Relics ProtectioAs we all know， cultural relics can help us know a period of history， and contribute to cultural research. Besides， cultural relics are precious wealth left by our ancestors， which play an important role in official history. In addition， they can deepen the love for our motherland. So it"s very important for us to protect cultural relics. First， we should make relevant laws and increase the punishment of illegal acts. Second， we should raise awareness of the protection of cultural relics and actively fight with crimes against cultural relics. As students， we should be civilized tourists and not destroy cultural relics.

1. Aware的基本含义Aware指的是为了理解并接受某种信息或状况而具有觉察、敏锐的意识。在英文中，“be aware of”可以理解为“意识到”、“知道”、“了解”之类的意思。2. Aware的常见使用场景Aware通常用于表达注意到某些事情或信息，或者在某种情况下，需要某个人具备特定的认知或意识的场景中。例如，我们可以说“我意识到在这个项目中我扮演的角色很重要”，“你必须对你的生活方式有所意识，才能保持身体健康”等等。3. Aware的常见搭配Aware通常和介词of、about、with连用，表达“意识到某事”或“对某事有意识”。例如，我们可以说：“我意识到自己犯了一个错误”，“我对这个话题很有意识”等等。此外，在英语中还有一些固定表达中含有aware，例如：self-aware（有自我意识的）、culturally aware（具有跨文化意识的）、health-aware（关注健康的）等等。4. Aware的反义词及相关形式与aware相反的词是unaware，表示“没有意识到”或“没有察觉到”，例如：“他对自己的行为后果没有意识到”这句话可以转化为“He was unaware of the consequences of his actions”。另外，aware还有一些常见的形式，如awareness表示“意识”、“觉察”等，例如，“我们需要提高公众对此问题的意识”，可以转化为“We need to raise public awareness of the issue”。5. 如何正确使用aware在使用aware时，需要注意表达的具体语境和语气。如果需要强调自己的意识或觉察，则可以使用形容词aware的基本形式；如果需要表达自己对某事的反应或感受，则可以加上相应的副词、形容词来描述。同时，需要注意表达的清晰度和准确性，确保意思表达清楚，不会引发误解。6. Aware在商务英语中的灵活运用在商务英语中，根据不同的场景和需求，我们可以采用不同的用词方式来表达aware的含义。举个例子，我们可以说：“I am conscious of the fact that some changes need to be made to the project plan”（我意识到需要对项目计划进行一些更改）；也可以说：“I am well aware that time is of the essence”（我非常清楚时间的重要性）。7. Aware在日常英语中的实际应用在日常英语中，我们也可以使用aware来表达各种意思，如意识到自己的过错、注意人身安全、了解健康问题等等，都可以使用aware。例如：“I am aware that I made a mistake”（我意识到自己犯了一个错误）；“Be aware of your surroundings”（注意你的周围状况）；“I am health-conscious”（我关注健康问题）。8. 小结Aware是一个非常实用和常见的词汇，在不同的场景中可以有不同的使用方法和搭配。在英语学习和实际应用中，我们需要熟练掌握其基本含义、搭配以及相关的形式和反义词，提高自己的英语能力和表达能力。

"Raise"是一个常见的英语单词，具有多种用法。以下是一些常见的用法：1. 动词用法：作为动词，"raise"的主要意思是举起、提高或抚养。例如："Please raise your hand if you have a question."（如果你有问题，请举手。）"They are raising money for charity."（他们正在为慈善事业筹集资金。）2. 名词用法："raise"还可以作为一个名词，表示加薪或增长。例如："He received a raise in his salary."（他的薪水有所增加。）"There has been a raise in the cost of living."（生活成本有所上涨。）3. 提出、提起："raise"也可以表示提出或引起某个议题、问题或话题。例如："He raised an important issue during the meeting."（他在会议上提出了一个重要问题。）"The incident raised concerns about safety."（这一事件引起了人们对安全的担忧。）4. 引起某种反应或情绪："raise"还可以表示引起某种反应或情绪。例如："The movie raised a lot of emotions in the audience."（这部电影在观众中引起了很多情绪。）"Her comments raised my curiosity."（她的评论引起了我的好奇心。）5. 增加、提升：另外，"raise"可以表示增加或提升某种事物。例如："They raised the prices of their products."（他们提高了产品的价格。）"The company aims to raise its market share."（该公司旨在提高市场份额。）此外，还有一些常见的短语和表达中涉及到了"raise"，例如：raise awareness（提高意识），raise a question（提出问题），raise the bar（提高标准）等等。总的来说，"raise"是一个非常多功能和常用的词汇，可用于描述举起、提高、抚养等动作，表达提议、增加或引发反应等含义。使用"raise"的正确和恰当的方式，对于英语交流和理解非常重要。

Tree-planting Day is an important environmental event celebrated worldwide. On this day, people come together to plant trees and raise awareness about the importance of trees in our lives. Trees play a crucial role in purifying the air, preventing soil erosion, and providing habitats for wildlife. By planting trees, we can contribute to a greener and healthier planet. Let"s join hands and make every day a tree-planting day!植树节是一个在全球范围内庆祝的重要环保活动。在这一天，人们聚集在一起种树，并提高对树木在我们生活中的重要性的认识。树木在净化空气、防止土壤侵蚀和为野生动物提供栖息地方面发挥着至关重要的作用。通过种植树木，我们可以为地球贡献更加绿色和健康的环境。让我们携手共进，使每一天都成为植树节！

注意安全（Be Safe）翻译：Be safe形式：命令句词组翻译：注意安全 (Be careful with safety)保持安全 (Stay safe)维护安全 (Maintain safety)提高安全意识 (Raise safety awareness)安全第一 (Safety first)含义解释："注意安全"是一个常用的口头提示，意思是要小心谨慎，以确保不发生危险或意外。它强调了个人的责任和行为，以保护自己和他人的安全。语法详解：“注意安全"是一个由两个汉字组成的简单词组，其中"注意"表示"要留心、关注”，“安全"表示"没有危险或风险”。这两个词的组合构成了一个口头提示，它通常被用作命令句，用于提醒人们要保持警惕并采取必要的预防措施。具体用法："注意安全"这个词组可以应用于各种场景，例如工作、学习、旅行等。它是一种肯定的提醒，强调了个人的责任和行为，以保护自己和他人的安全。以下是一些例句：别忘了明天参观工地时注意安全。Don"t forget to be safe when visiting the construction site tomorrow.孩子们，上学路上要注意安全，不要乱穿马路。Kids, be safe on your way to school and don"t jaywalk.在实验室工作时，必须维持高度的安全标准。When working in the laboratory, it"s crucial to maintain high safety standards.公司举行了培训课程，旨在提高员工的安全意识。The company organized a training course to raise the safety awareness of the employees.在进行户外活动时，安全第一，不要冒险。Safety first when engaging in outdoor activities, don"t take unnecessary risks.

父母是最好的老师Parents are the best teachers在大多数情况下，孩子最早的老师都是父母，他们是最关心孩子发展的。Most times, the first teacher of a child is her parent. The parents are the ones who care most about their children"s development孩子的问题是千变万化的，提高父母的认识是解决孩子问题的唯一有效途径。父母的一言一行,一举一动,对孩子都能起到潜移默化的作用.比如:父母如果经常使用礼貌用语。一般来说，父母每天爱干净讲卫生,孩子也很自然的爱干净讲卫生.,孩子自然也会被他们的习惯所影响.The problems of children vary greatly, therefore improving the understanding of parents is the only effective way of solving children"s problems. Any word or action of the parents will have subtle but strong influence on the child. For example, if the parents always use polite words, the child wil do so too. If the parents are tidy and sanitary, the child will be so too. The children are naturally influenced by their parents" habits.我们还是小孩子的时候,父母的一些言行就已经开始影响着我们了.俗话说言传不如身教.因此父母是孩子最好的老师！When we were children, our parents" words and actions were already influencing us. As the saying goes, ‘Action speaks louder than words", parents are the best teachers of children. 仅供参考。

Resources ConservationCurrently, The population of the planet grew rapidly while resources become less and less . But people are not strong awareness of resource conservation. Waste resources can be seen in everywhere. A case in point is our school, many high-grade students throw the books of which are not make full use into the garbage heap, rather than recycling. Now,I advocate senior students should left those textbooks to junior students, raise the awareness of saving resources. This is also conducive to increase friendship, to develop the habit of helping others. Let us all act it. Protection of our resources to achieve sustainable development. Our planet will become more suitable for human habitation.翻译：节约资源如今，地球上的人口增长很快，而资源却越来越少。但是人们节约资源的意识并不强。浪费资源的现象到处可见。 在我们学校就是如此，许多高年级的学生把没写完的课本都丢到垃圾堆里，而不是回收再利用。 现在，我提倡高年级同学把可以用的课本留给低年级学生、提高节约资源的意识。这也有利于增进友谊，养成助人为乐的习惯。 希望大家支持！ 让我们大家都行动起来吧。保护我们的资源 实现可持续发展我们的地球将变的更适合人类居住。

Novak DjokovicMr. president of General Assembly,Mr. president of International Olympic team,excellencies ladies and gentlemen:尊敬的联合国大会主席，尊敬的国际奥委会主席，女士们先生们：It is a real honor to address the UN and to be given an exceptional privilege of speaking on behalf of the global family of athletes in this historic day.First of all, I would like to thank the UN member states for preclaiming the April 6 the“International Day of Sport for Development and Peace”.我很荣幸来到联合国，并有幸代表全世界运动员的在这历史性的日子里发言。首先，我想要感谢联合国各成员国提出将4月6日设为”体育促进发展与和平国际日“的提案。I was born and raised in a small but proud country that has gone through difficult times in the last decades. It was during that period of hardship that sports became an integral part of my life. Everything change for me when I saw Pete Sampras triumphed at Wimbledon.He became my idol.I triumphed of being just like him of the NO.1 tennis player in the world. It took me 13 years to achieve my goal. It was a long journey and it was not mine alone. I am incredibly blessed to have enjoyed the support of people who I love. They continue to inspire me so many ways. And I will always be grateful to them for the sacrifice they made.我出生、成长在一个充满着民族自豪感的小国，她在过去几十年中历经艰难。正是在这段艰苦岁月中，体育让我的生命更为完整。当我看到皮特·桑普拉斯在温布尔登夺冠的时候，一切都变了。他成为了我的偶像。如今我也像他一样成为了世界第一的网球运动员。我用了13年达成我的目标，这是一段漫长的旅程，而且我并非独自一人。我 非常幸运地拥有我爱的人的鼎力支持。而我也一直对他们所作出的牺牲心怀感激。I hope this international day will motivate each of us doing our best in every way possible, additional efforts in cultivating the intrinsic sporting values such as fair play, teamwork and respect for opponents.These ideals are universal. Every successful society is built on them, the more we instill respect for these ideals in ourselves, the better the world will be leaving to our successors.我希望这个国际日会激励我们尽可能做到最好，付出更多的努力来培育固有的体育精神——公平竞赛、团队协作以及尊重对手。这些理念是公认的，每一个成功的社会都以此为基础建立，我们越是坚定地尊重这些理念，我们所留给后代的世界将更为美好。Sport has a unique and convening power and it can help the direct greater attention to the most at risk and vunlerble in our communities, particularly disadvantaged children. When a reknown athlete peaks out,he or she reaches a large audience. That"s serious responsiblity. When they encourage kids to dream big and work hard, we can make a tangible differences in their lives helping them reach their full potential. With their partners-international organizations,governments and local groups,we can do even more. 运动拥有独一无二的号召力，它让人们更为关注那些处于危险中的易受伤害的群体，尤其是弱势儿童。当一个知名的运动员登上顶峰时，他或她得到很高的关注。这就是该承担的责任，当他们鼓励孩子们充满梦想、艰苦奋斗的时候，这能够帮助孩子们充分发挥潜能，甚至改变了他们的一生，而在国际组织、政府和当地团体的帮助下，我们能够做到更多。That is why such a privilege to be a UNICEF national ambassdor for Serbia. It is one of the reasons also why I established the Novak Djokovic Foundation. More and more children now have the chance to get the head start through exercise and preschool education with sporting facilities which are creative energy in a postive direction.They also learn to work together for a common purpose . They get off the streets and way from the drugs and crimes,and their horizons begin to expand. 这就是为什么我觉得成为联合国儿童基金会任命的塞尔维亚亲善大使是无上荣耀。这也是我建立诺瓦克·德约科维奇基金会的原因之一。越来越多的孩子有机会早早开始他们的体育锻炼，这是一个积极的方向（这句理解的不太好）。他们开始学会为了共同的目标而合作，他们不再在大街上游荡，远离了毒品和犯罪，他们的视野开始逐渐开阔。I"ve seen how far they"ve progressed, and how they start believing in themselves. Their self-confidence grows by the day, and they learn that improvement and success comes with hard work. And you won"t going anywhere if you give up the faith of thirsty. The UN has been given those possibilities to establish common standards for sustainable development on our 21 century world.And I have a great appreciation for your endeavors. People across the globe are counting a new to come up with the next generation of development goals. 我看到他们进步的有多远，看到他们开始相信自己。他们的自信从那天开始成长，他们认识到提升自我和成功始于艰苦奋斗。如果你放弃了对这一信念的渴求，你将无处可去。21世纪，联合国正在将这些可能性建立为可持续发展的普遍标准。我对你们所付出的的努力深表钦佩。全世界的人民都在为了下一代过少更好的生活而努力。（好吧，这一段也理解的一般）And I hope your working by inspired by the values and ethical principles in support.We also looking to your leadership in making a full use of them to how promote these agreed consolation. They can help break cycles of mistrust heal in hatred and uphold human dignity. The founder of Olympic Moment——Pierre De Coubertin once said that"peace could be the product only of a better world and a better world could be brought only by better individuals,and better individuals could be developed only by the give and take, the buffering and battering, the stress and strain of free competition."(1896)我想你们在崇高价值和道德原则的支撑下会有更好的表现。我们也从你们作为领头羊在维护稳定、促进和平的工作中充分利用资源获益颇多。你们的努力有助于打破从不信任的怪圈，化解仇恨，维护人类的尊严。现代奥林匹克之父皮埃尔·顾拜旦曾说："和平只能产生于一个好的世界，一个好的世界只能由好的个人组成，好的个人只能从激烈的比赛中造就。"But competition is not only about besting one"s opponent,it"s not about triumphing the medals, either. It is the form of personal enviornment and internal pursuit of excellence and help people some way to discipline your mind and body. I will take away off this meeting the meaning sense of purpose to give my best every time i go out on the court but also to give back to those less fortures to raise awareness of the plight of children who need our help and encouragement most,so their dreams come true.Allow me once again to thank you for what you have done and for giving me the chance to take part in this session which i hope will go along way to bring sports into the main streams of the UN"s agenda.Thank you for your attention.但竞争不只是为了战胜对手，也不是为了拿到奖牌。他是一种内在追求卓越的个人思想，这种形式有助于帮助人们修养身心。我想从这次会议中所学到的一个应当是尽力做到最好，每次当我上场时，唤起人们对那些处在困境中的孩童的关注，他们最需要我们的帮助和鼓励，来实现他们的梦想。请允许我再次感谢你们所做的一切，并给我机会参与到这次会话中，我希望今后体育能成为联合国日程中的主流。谢谢各位的倾听！求采纳~~~~

1. B bring down 降低，减少 政府已经采取措施降低日用品的高价格，以维护市场的稳定。2. B suggests 表明 很多人在公共场所抽烟的事实表明我们需要进行一场全国性的运动以提高大家抽烟有害的意识。 The fact that... 同位语从句，谓语取决于主语the fact。3. C. 同位语从句 when,,,从句， he decided to...主句 that ... 做同位语解释说明the news， 因the war broke out 不缺成分，所以连接词用that 。记住：同位语从句中90%以上用的that 连接。4. D by the time +过去时（从句），过去完成时（主句）。 Jack从英国回来时，他的儿子已经从大学毕业了。 by the time+一般现在时（从句），将来完成时(主句) e.g.: By the time he graduates from college, he will have learned 5,000 words. 等他从大学毕业时，他将已经学了5000个单词。 希望能帮到你！

Since the English translation of logistics PhyslcaI Distrl Europe im (entities allocation). It is through effective arrangements for the storage of goods, management and transfer. commodity in the time required to reach the point of business activities. Logistics throughout the production and circulation of the entire process, therefore reasonable to efficient logistics of the entire production and circulation of the coordination structure and the sound and enterprises to bring huge profits. 1. Logistics costs (cost) accounting difficulties and the need for logistics cost (the cost) is in the process of logistics in order to provide the services and operational activities will occupy consumption of wood and labor and labor objectify currency performance. Logistics cost of the logistics activities of the cost. Such as packaging, transportation, storage, handling, transport, distribution processing, distribution, Information relating to the disposal of the costs and expenses. 1. Logistics cost effective accounting of the need. Logistics in the entire production and circulation will continue to exist everywhere. Logistics cost effective accounting for the enterprise can bring enormous profits but this role is increasingly being recognized by many businesses and attention. In the history of mankind has come up with two large profits areas : material resources fields, the area of human resources. Material resources area was known as a source of profit human resources fields known as the second source of profits. These two sources have profits brought to mankind huge profits However, as time growth and the scarcity of resources to enhance the profits of these two potential source of small, as a result of the rise in profits become scarce. In such cases, humans began to find new profit from the logistics field of potential began to be seen. Logistics has become the third source of profits. In the field of logistics has become the third source of profit for the period of the effective field of logistics has become a necessary accounting only for their own enterprises physical logistics can be accurately master, it can be effectively controlled and regulated logistics costs to increase profit. At present, in a buyer"s market conditions, enterprises in the market in order to gain an edge in competition-must first consider the needs of the consumers and consumer products facilitate the extent this makes enterprises to undertake the necessary logistics management to avoid both unavailable to consumers the impact to satisfy the consumers in the time and place of business products, inventory control but also in the level necessary to reduce costs. Therefore r enterprise logistics manager with more accurate in terms of the logistics cost data is essential to take this into their talents in the control and the maintenance of customers maintain a relatively balanced. 2. Logistics into account the difficulties of this nature. Although logistics costs include packaging, transport "storage, and management of the cost, However, only part of the direct cost of logistics, use of the accounting system can be accounted for enterprises and other indirect costs of logistics in mixed miscellaneous manufacturing costs, Cost of sales and other costs of using the current accounting system can not alone accounting. Businesses want to know the actual cost of the logistics of using the current accounting method has been unable to get detailed information. So the old Waseda University professor Seiichi amendment under these circumstances the "" logistics tip that "it will tip China surfacing part of the analogy to enterprise logistics obvious potential water fee, known as the most logistics enterprises find it difficult to grasp the situation. Logistics tip that is to raise awareness of the importance of logistics but also stressed that the current accounting system of logistics cost accounting more difficult. Since management master Peter. "s Br?ucker (1962) first introduced the logistics management is "one still not a virgin land reclamation, in the 40 years during Although logistics management theory, business logistics operation logistics services market has made great development. Logistics such as the United States accounted for 44% of the GOP has fallen from 14.9% in 1962 dropped to 20, The 9.5%, while third-party logistics market share in 201 years has risen to 6.3% of the share. But for the United States, the logistics management more mature countries, ZcoZ the survey, Still, 40% of the surveyed enterprises enterprise managers do not know the cost of logistics. This is because the practice of enterprise management were not aware of the logistics cost structure and the content of what is, because there is currently no accurate comparison of the logistics cost accounting system. As the logistics area known as the human source of a third of profits. The logistics costs in the current accounting system makes it difficult, therefore accurate accounting of the cost of logistics in order to make accurate accounting , and the current accounting system involved in the logistics costs of the subject content will be changed from other logistics costs cost of extracting. so that enterprises can detail their understanding of the logistics costs.

Around the HomePractice green living inside your home to benefit the environment around you. Buy a recycling bin, learn about your community"s recycling program and pledge to recycle whatever products you can. Be vigorous about monitoring your home"s energy use; turn off lights when you"re not in the room, use energy-efficient bulbs and consider upgrading old appliances to those that are more efficient. Divert as much household waste from the landfill as possible by donating clothing and used items to the homeless, organizing a garage sale and repurposing products.In the YardSet up a compost bin in your backyard and collect food scraps. Use a rain barrel to hold rainwater that you can use for watering the garden. Limit the use of the sprinkler to only once per week, and place mulch around the bases of your plants, as it helps to maintain the moisture content, which means you won"t have to water as frequently. Be careful to prevent putting hazardous materials into the ground. When you fill your lawnmower, avoid spilling gas or oil.Out and AboutThe method in which you travel to and from work and other locations in your community can benefit the environment. Walk or ride your bicycle when possible, use public transportation or organize a neighborhood carpool. Limiting the use your vehicle not only cuts down emissions of greenhouse gases but, when multiple people take this approach, can also extend the life of the roads. Carpooling or taking public transportation is also typically cheaper than using your vehicle daily. Use cloth bags at grocery stores and limit your intake of products sold in contains that you can"t recycle.The Big PictureOn a larger scale, educate yourself about environmental concerns and raise awareness of these issues by discussing them with your network of friends and family members. Arrange to speak about environmental protection at your child"s school or at a service club. Conduct research and support companies that use renewable technology or are industry leaders in their environmental practices. Donate funds or volunteer with environmental groups and write to your local representatives to express the importance of caring for the environment.

这应该是右眼近视的度数，575度。例如：R:-5.75-1.25*170 L：-4.50-1.50*175 PD：63指的是：右眼：近视575度，近视散光125度，轴位170；左眼：近视450度，近视散光150度，轴位175，瞳距63毫米。

常用照片的尺寸及规格：1英寸证明照的尺寸应为3．6厘米×2．7厘米；2英寸证明照的尺寸应是来3．5厘米×5．3厘米；5英寸（3R）照片的尺寸应为12．7厘米×8．9厘米；6英寸（4R）照片的尺寸是zd15．2厘米×10．2厘米；7英寸（5R）照片的尺寸是17．8厘米×12．7厘米；12英寸照片的尺寸是30．5厘米×25．4厘米。扩展资料：身份证、体检表等多采用小一寸22×32mm，第二代身份证照片尺寸为26mm×32mm，普通一寸照则为25mm×35mm。中国护照/旅行证照片的尺寸为48mm×33mm，其中，头部宽度为15mm～22mm，头部长度为28mm～33mm。照片的尺寸通常以英寸为单位，1英寸≈2.54厘米。X寸照片是指照片长的一边为X寸。如5寸照片的长为2.54x5=12.7cm；12寸照片的长为2.54x12=30.5cm。参考资料：百度百科-照片尺寸

线性回归方程公式相关系数r具体如下：线性回归r2指的是相关系数，一般机器默认的是r2>0.99，这样才具有可行度和线性关系。 当根据试验数据进行曲线拟合时，试验数据与拟合函数之间的吻合程度，用一个与相关系数有关的一个量‘r平方"来评价，r^2值越接近1，吻合程度越高，越接近0，则吻合程度越低。扩展知识：相关表和相关图可反映两个变量之间的相互关系及其相关方向，但无法确切地表明两个变量之间相关的程度。相关系数是用以反映变量之间相关关系密切程度的统计指标。相关系数是按积差方法计算，同样以两变量与各自平均值的离差为基础。通过两个离差相乘来反映两变量之间相关程度；着重研究线性的单相关系数。决定系数，反应因变量的全部变异能通过回归关系被自变量解释的比例。如R平方为0.8，则表示回归关系可以解释因变量80%的变异。换句话说，如果我们能控制自变量不变，则因变量的变异程度会减少80%。相关表示两变量间的相互关系，是双方向的。而回归则表示Y随X而变化，这种关系是单方向的。医学资料中的有些资料用相关表示较适宜。

车标是字母R的汽车品牌是劳斯莱斯，一般需要700-1000多W以上。劳斯莱斯（Rolls-Royce），英国豪华汽车品牌，1906年成立于英国，公司创始人为Frederick Henry Royce（亨利·莱斯）和Charles Stewart Rolls（查理·劳斯）。Rolls-Royce出产的轿车是顶级汽车的杰出代表，以其豪华而享誉全球，是欧美汽车的主要代表之一。“双R”徽标劳斯莱斯（Rolls-Royce）的平面车标采用两个重叠在一起的“R”，这是查理·劳斯（Charles Stewartrolls Rolles）与亨利·莱斯（Henry Royce）两人姓名的第一个字母，体现了两人融洽及和谐的关系。起初双R标为红色，有说法称在两位创始人相继离世之后，劳斯莱斯公司的车标从红色变成了黑色，但这种说法却有悖于事实：根据权威的历史资料记载，公司启用新的车标只是为了让整车风格显得更加庄重。

1.95125℃。1.561r等于1.95125度。列氏度和摄氏度换算关系如下：1°R=1.25℃，1℃=0.8°R其中：°R表示列氏度，℃表示摄氏度。

R是理想气体常数，R=8.314 J.K-1.mol-1

以下都是我自己算出再取约数的,累死了所有中国电器U都=220伏I:电视0.6A电灯0.2A冰箱0.8A台式电脑CRT显示1.5A洗衣机0.8A微波炉3A空调5A以上R:电视360欧电灯1100欧冰箱275欧电脑150欧洗衣机275欧微波炉73欧空调50欧W(估计你说的是P):电视150瓦电灯60瓦冰箱170瓦电脑300瓦洗衣机200瓦微波炉600瓦空调1500瓦

图片大小的"寸"是指长边的英寸值。另一种表示方法是以短边长的英寸值取其整数来表示的。如3R 4R 5R …… 此外还有4D表示大6寸照片。这是为了以区别于一般4R（6寸）照片的大小。4R边长为15.24×10.16 cm，长宽比为3：2；而4D实际尺寸为15.2cmX11.4cm，长宽比为4：3按照以上的计算,6R、8R分别相当于8寸（8*6）、10寸（10*8）照片。

仅参考

相关系数r的计算公式是：r值的绝对值介于0～1之间。通常来说，r越接近1，表示x与y两个量之间的相关程度就越强，反之，r越接近于0，x与y两个量之间的相关程度就越弱，一般认为：扩展资料：需要说明的是，皮尔逊相关系数并不是唯一的相关系数，但是最常见的相关系数，以下解释都是针对皮尔逊相关系数。依据相关现象之间的不同特征，其统计指标的名称有所不同。如将反映两变量间线性相关关系的统计指标称为相关系数（相关系数的平方称为判定系数）；将反映两变量间曲线相关关系的统计指标称为非线性相关系数、非线性判定系数；将反映多元线性相关关系的统计指标称为复相关系数、复判定系数等。

R代表转数，后面的是连一块的KWh表示“千瓦时”也就是我们平时说的1“度”电。这个表是上面的转盘转2500圈后它所测得的电量是1度。

电路问题是一定要电路图，否则无法回答例如，R1R2R3都是串联的话R = R1+R2+R3 = 22.5

R为气体普适恒量，国际单位制中，R=8.31J/mol*K

R=8.314472