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alkanes

美 ['ælkeɪnz]英 ['ælkeɪnz]

n.【化】链烷
网络烷烃；烷类；烷烃类

复数：alkanes

alkanes

alkanes

英-汉英-英网络释义

alkanes

n.

1.【化】链烷,烷(属)烃

1

The result showed that among the lipid substances we extracted, most compositions which had stronger antimicrobial activities are alkanes .

结果表明，抗菌活性较强的物质中大多是烷烃类物质。

2

Chemical fossils (e. g. alkanes and porphyrins ) are often the only evidence for life in rocks of PRECAMBRIAN age.

化学化石（烷烃和卟啉）是前寒武纪地层中生命存在的唯一证据。

3

It concluded that there is a liner relation between the physical chemical properties of alkanes and effective length of carbon chain .

研究表明，链烷烃的许多物理化学性质与有效碳链长度成线性关系。

4

Synthesizing very long alkanes is not trivial, especially in the quantities and purities required to put these simulations to the test .

合成很长的烷烃并不轻松，尤其是达到实验所需要的数量和纯度。

5

And Virent, based in Madison, Wisconsin, is making alkanes out of sugars using a chemical, rather than a biological, process .

威斯康辛州麦迪逊的 Virent 正通过一种化学、而不是生物的过程从糖中提取直链烷烃。

6

Its chemical properties are similar to those of alkanes , but its molecule is in the form of closed ring .

其化学性质与烷烃相似，但其分子是闭环形式。

7

The general uses of alkanes may be divided into three categories .

烷的一般用途可分为三个方面。

8

The distribution pattern of the carbon isotopic compositions of the individual n-alkanes shows almost no change during this process.

同时也证明了生排烃过程不影响正构烷烃单体碳同位素组成曲线的形状；

9

Ethylene can also be turned into alkanes, a class of hydrocarbons that are a component of gasoline .

乙烯还可以转变成烷烃 ——是石油中含有的一种碳氢化合物。

10

They confirmed their discovery by incorporating the genes into E. coli and measuring the alkanes that the bacteria subsequently made.

他们通过将产烷必须的基因植入大肠杆菌并对最终产生的烷进行测量，验证了他们的发现。

11

Alkanes can be chlorinated or brominated by treatment with chlorine or bromine in the presence of visible or uv light .

烷在可见光或紫外光照射下，用氯或溴处理才能氯化或溴化。

12

The direct oxidation of propane to acrylic acid has become a hot spot in catalytic oxidation of light alkanes in recent years .

丙烷直接氧化制丙烯酸是近年来催化氧化的热点课题。

13

Conclusion The main components of the volatile oil were firstly analyzed and most of them were esters and alkanes .

结论首次对林下参的挥发性成分进行了分析，含量较高的主要是酯类和烷烃。

14

A lower LHSV benefited the conversion of the alkanes , but a further decrease of LHSV would reduce the selectivity of the alkenes .

较低的空速有利于十二烷的转化，但进一步减小空速将造成十二烯的选择性明显降低。

15

The hydrocarbon oil composition is divided into alkanes, cycloalkanes, aromatics .

原油中的烃类成分主要分为烷烃、环烷烃、芳香烃。

17

The high-carbon alkanes mainly come from heavy ends sneaking in during the production or transportation process of LPG.

其中高碳烷烃主要源于在生产或运输 LPG 过程中混入的重质成分；

18

The bacteria secrete the alkanes , which can then by easily collected and used as a fuel .

改造过的细菌能分泌烷类，很容易被收集并可以用作燃料。

20

Such alkanes are the main ingredients of diesel fuel .

这种烷烃是柴油的主要成分。

21

Organisms make alkanes via a complex process that produces fatty acids from carbon dioxide or sugars.

生物体通过一个复杂的过程，即利用二氧化碳或糖类生产脂肪酸的过程中产烷。

22

Alkanes are resistant to attack by oxidizing agents generally .

烷烃一般对于氧化剂的作用是稳定的。

23

The alkanes are generally inert to ionic reagents .

烷烃一般说来对离子型试剂是不活泼的。

24

On the NFPA 704 scale , 2-methylhexane is listed as a reactivity level-0 chemical , along with various other alkanes .

在 NFPA704 系统中，2 -甲基己烷与其他烷烃被列为反应活性等级为 0 的化合物。

25

In addition , the selectivity of long-chain alkanes in air is higher than that of in ozone .

另外，在空气气氛下长链烷烃的选择性高于在臭氧气氛下。

26

27

Alkanes undergo reaction such as cracking , alkylation, oxidation, halogenation , nitration and so on.

烷烃能够发生裂解反应、烷基化反应、氧化反应、卤代反应、消化反应等。

28

Industry: Industrial gases ; Alkanes and derivatives ; Organic Intermediates; Chemical Additives; Chemical Instrumentation;

所属行业：工业气体；烷烃及衍生物；有机中间体；化工助剂；化工仪表；；

29

A study of correlation between the physical-chemical properties and molecular molar mass of alkanes

分子摩尔质量与链烷烃物理化学性质的相关性研究

30

Industry : Alkanes and derivatives ; Organic Intermediates ; Pharmaceutical Intermediates;

所属行业：烷烃及衍生物；有机中间体；医药中间体；；

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