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关注：1
2013-05-23 12:21
求翻译：四种萃取剂均对水相中的四种铅化合物有一定的富集效果是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
四种萃取剂均对水相中的四种铅化合物有一定的富集效果
问题补充： |
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2013-05-23 12:21:38
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2013-05-23 12:23:18
Four have water extraction in the four lead compounds have a certain rich effects
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2013-05-23 12:24:58
Four kind of extracting agent add water the four kind of plumbous compound certainly to have concentrate the effect
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2013-05-23 12:26:38
Four four extraction agent for aqueous lead compounds concentration effects
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2013-05-23 12:28:18
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