Alkeane Carbon Number Distribution of Paraffins;

石蜡碳数分布；

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The fewer average carbon number of n paraffin in diesel is, the lower cold filter plugging point is.

柴油中正构烷烃的平均碳数越少，冷滤点越低。

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The viscosity of Gemini surfactants solution is also related to the alkyl carbon number and the spacer.

双子表面活性剂的溶液粘度与烷基链和联结基的长度有关。

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It found that the average number of carbon monoxide deaths in the United States was greatest in the month of January.

VOA: special.2010.02.02

So carbon 12. We know that it has the proton number, by definition, is 6. And the neutron number, 6 from 12 is 6. So it has 6 protons and 6 neutrons.

所以碳12，我们知道它有质子数，根据定义，那就是6，而电子数，12减6等于6，所以它有6个中子。

麻省理工公开课 - 固态化学导论课程节选

So, if we want to figure out the formal charge on the carbon, we need to take the number of valence electrons, so that's 4. We need to subtract the lone pair, what number is that? It's 2.

如果我们想算出碳原子的形式电荷，我们需要将价电子的个数，也就是四，减去孤对电子的个数，它是多少？是二。

麻省理工公开课 - 化学原理课程节选

Carbon fibre is made from thin threads that each contain a number of carbon filaments.

BBC: Knitting and baking the cars of the future

Turn on the app, and then check in to see your CO2 emissions by day, week, month or even year, measured both in tons of carbon dioxide and number of trees.

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"The transition to a low carbon economy" is number six - remarkable mainly for the fact that it wasn't there before.

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