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jiushengming

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[求助] 求翻译

如题,看到很多论文里有ca这个词,不知是何意?求解,谢谢!The first clear example of enantioselectivity in a pharmacological action proper was the demonstration by Cushny that (-)-hyoscyamine was ca.12–20 times more potent than the dextro enantiomer in a variety of pharmacological effects.
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jiushengming: 金币+5, 翻译EPI+1, ★★★★★最佳答案, 不好意思,金币给迟了 2015-06-15 14:08:54
ca. 是拉丁语Circa的缩写,有时也缩写为:c., ca (also circ. or cca.),意思是approximately,大约的意思。
2楼2015-06-12 10:45:46
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