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关注：1
2013-05-23 12:21
求翻译：而且老化对这两种污染物的生物有效性主要集中在前20天是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
而且老化对这两种污染物的生物有效性主要集中在前20天
问题补充： |
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2013-05-23 12:21:38
[object Object]
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2013-05-23 12:23:18
and aging of the two pollutants are concentrated in the biological validity 20 days ago
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2013-05-23 12:24:58
Moreover gets older to these two kind of pollutant biological validity mainly concentrates in previous 20 days
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2013-05-23 12:26:38
And aging on the bioavailability of these two pollutants are mainly concentrated in the first 20 days
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2013-05-23 12:28:18
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