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分之一

  • 网络ppm; ppb; 1ppm

分之一分之一
网络释义

分之一

ppm

化学品的主要污染是移动的金属离子，通常须限制为百分之一（ PPM）级或更低。一些供应商可制造MIC级的化学品，含量仅 …

ppb

...14种元素，在人体内只占百万分之一(ppm)～万万分之一 (ppb)，这十几种元素加在一起，仅占人体重量的0.05％，称之为生 …

1ppm

分之一(1ppm)，为了适应超大规模集成电路制造技术的发4 n. H5 B3 h' ?6 R展，提高动力源的输送质量，超纯气体、超纯水所 …

part per cent

食品添加物知识补充，塑化剂... ... (part per trillion) 兆分之一 (percent: part per cent) 分之一 (part per million) 万分之一 ...

1ppb

...剂(如endrin,C12H8Cl6)在低於十亿 分之一(1ppb)的浓度即有对鱼致命的毒性，无脊椎动物则更敏感。

例句：
1
The researches had been able to put flat plates a millionth of a meter apart.
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Even when managers do get away, one-quarter check e-mails and voicemail messages, and 13 per cent call the office at least once a week.
3
Palestinians have access to only a fifth of the water supply, while Israel, which controls the area, takes the rest, the bank said.
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In discussing titrations of acid and base solutions, it is often convenient to think in terms of milliequivalents.
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"Among African-American teenagers, about one in two were affected compared to one in five white teens, " she said.
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I had been taken back to my room after surgery, one-quarter awake and feeling as if I had just tumbled over Niagara Falls in a barrel.
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The men who worked the cattle in the treeless expanses of the West, at least one-fourth of them blacks, became known as cowboys.
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By these three was the third part of men killed, by the fire, and by the smoke, and by the brimstone, which issued out of their mouths.
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Howard Webb, the English referee retained by Fifa for the quarter-finals, said he would be open to the introduction of goalline technology.
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China says it has exploited just a third of its total hydropower reserves, compared to more than 80 percent in the United States and Japan.
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Carlo Ancelotti has tried to stay out of the matter and focus on Thursday's Coppa Italia quarter-final.
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He felt his own responsibility was enhanced by the fact that he was the spokesman of 400 million people, one quarter of the human race.
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And it is a disaster: One of out of every five U. S. foreclosures this year was in California.
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He owns more than a quarter of Facebook's stock and controls votes for three of five board seats, say people familiar with the matter.
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However, production of the gas is currently just a quarter of that.
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The recycle time of the authentication key is at least one-third, and not more than one-half, that of the cookie time-out value.
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A third of men say they have no confidence when it comes to Christmas cooking, with a fifth saying they feel lost in the kitchen.
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He said he spent a mere $150, 000 on his Iowa campaign, and a third of those who voted for him paid for their own tickets.
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India's GDP is just a third of China's, but its growth rate of more than 6% a year lifted average incomes over $1, 000 for the first time.
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Since he had put a quarter of his money in the pot already, he reasoned that he would do what he could to come out victorious.

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