Study the biological limit of urine trans, trans-muconic acid for occupational exposure to benzene.

研究尿中反式，反粘康酸对苯职业接触的生物学极限。

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The process involves taking titanium dioxide and treating it with silica, silicone grease or silicic acid for a few minutes.

这个过程包括以二氧化钛反应润滑脂或硅烷、硅酸几分钟。

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The ribosome finds the appropriate amino acid for each "letter" and assembles them head-to-tail in sequence; other "letters" indicate when to start and when to stop.

核糖体找到每个“字母”的适当的氨基酸，并将它们首尾相连，组成一个序列；其他“字母”表示何时开始以及何时停止。

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But Mister Zundt says reducing air pollution and acid rain will reduce respiratory illnesses for people in the city.

VOA: special.2009.09.07

When you think about a gene or a transcript, the messenger RNA copy of a gene, you know that for every sequence of a nucleic acid there's a complimentary sequence.

当你们考虑一段基因或者一个,转录一段基因的mRNA拷贝,你们知道每个核酸序列,都有互补序列

耶鲁公开课 - 生物医学工程探索课程节选

We stopped in the afternoons to fish for a few minutes in little rivers turned black by the acid of cypress trees.

VOA: special.2010.01.30

Johnson Controls serves this market by providing a variety of automotive batteries like lead-acid for traditional gasoline-powered vehicles, AGM (Absorbent Glass Mat) for start-stop vehicles and Li-ion for hybrid and electric vehicles.

FORBES: Johnson Controls Earnings: Weak Europe Could Offset Gains From Asia

The acid test for Spanish product will be to see how that demand holds up.

FORBES: Spanish Bulls Chase Euro Higher

"Thursday will be the acid test for Gianni and James, " Baggies manager Tony Mowbray told the club's website.

BBC: Baggies hit by new injury worries