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关注:1
2013-05-23 12:21
求翻译:R and b are each selected from hydrogen, halogen or an alkyl group of from about 4 to about 8 carbon atoms是什么意思? 待解决
悬赏分:1
- 离问题结束还有
R and b are each selected from hydrogen, halogen or an alkyl group of from about 4 to about 8 carbon atoms
问题补充: |
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