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北京石油化工学院2026年研究生招生接收调剂公告
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romami

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[求助] 请教给位大侠,下面这句话作何翻译啊?

RT :Approximately 2.0 g of (EO)20(PO)70(EO)20 triblock copolymer
(Pluronic P123 from BASF, Co.) was dissolved in 20.0 mL of 99.5+% anhydrous ethanol, 200 proof (Acros Organics), and allowed to stir for 4 h.
  这句话中的“200 proof (Acros Organics)"是什么意思啊?望各位大侠不吝赐教!
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yamakawa

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【答案】应助回帖

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romami: 金币+2, ★★★很有帮助, 正解 2012-06-29 11:21:31
Alcohol proof is a measure of how much alcohol (ethanol) is contained in an alcoholic beverage. The term was originally used in the United Kingdom and was defined as 7/4 times the alcohol by volume (ABV). The UK now uses the ABV standard instead of alcohol proof. In the United States, alcoholic proof is defined as twice the percentage of ABV. The measurement of alcohol content and the statement of this content on the bottle labels of distilled beverages (also called liquors or spirits) is regulated by law in the United States. The purpose of the regulation is to provide pertinent information to the consumer.

网上看到的,希望对你有帮助,在我看来就写上99.5%无水乙醇意思就到位了
2楼2012-06-28 17:58:07
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yamakawa

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这文章著者估计是美国人
3楼2012-06-28 18:00:09
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zbj

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romami: 金币+2, ★★★很有帮助, 照你这么看,前面已说的是99.5%后面却又说是100%,有点自相矛盾啊! 2012-06-29 11:23:51
标准酒度(Alcoholic proof),是衡量酒精含量的标识方式。这种标识方式在美国常用,其定义为酒精体积百分数的2倍。例如, 40%乙醇, 相当于80 PROOF。英国定义为酒精体积百分数的7/4倍。所以,200 proof 是 100% 乙醇.
4楼2012-06-28 18:15:07
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romami

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引用回帖:
3楼: Originally posted by yamakawa at 2012-06-28 18:00:09
这文章著者估计是美国人

5楼2012-06-29 11:21:42
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