Divide the figure you have calculated in step four by two (or similar conversion factor) in order to convert from ideal time to elapsed time.

用第四步中计算出的数字除以2(或是类似的转换因子)，由此把理想时间转换为持续时间。

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Analysis by gel electrophoresis revealed slight differences in amino acid sequence of the enzymes of two of the four pairs.

经凝胶电泳分析，发现四对实验对象中有两对的酶的氨基酸序列略有差异。

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Quartz is quartz—a silicon ion surrounded by four oxygen ions—there's no difference at all between two-million-year-old Pleistocene quartz and Cambrian quartz created over 500 million years ago.

石英是石英——由四个氧离子围绕的硅离子——200万年前的更新世石英和5亿年前的寒武纪石英之间没有任何区别。

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For example, areas with mangrove forests were not damaged as badly by the Indian Ocean tsunami in two thousand four.

VOA: special.2010.04.20

I've got two states here, three states here, two here, I need four, and if I can come up with these bonds, four, by the Hund rule I'd fill them like this.

我们已经有2个状态在这里，3个在这里，2个在这里，我需要4个，如果我能想到这些键，四个，通过洪特规则，我们就能像这样排布。

麻省理工公开课 - 固态化学导论课程节选

1 So, it's two times 3.12 plus four times 1.31, 6 all divided by six.

就是2*3。12+4*1。,最后再除以。

麻省理工公开课 - 固态化学导论课程节选

Hollywood's soft power has been augmented in the past four years by two innovations.

CNN: Can Obama use Hollywood's soft power?

"Yesterday I was interviewed by the police concerning two complaints - one of which dates back four years, made by two people who are well-known to each other, and who until yesterday I regarded as friends, " he said in a statement.

CNN: SHARE THIS

Discussions have been under way for the last four weeks led by two local businessmen, who are both avid supporters of the League One club.

BBC: Sheffield Wednesday in discussions with new consortium