污染可分为;1)生物学污染(大肠杆菌等)。2)化学污染(氰化物等)3)物理学污染(核污染等)4)基因污染(转基因与病态基因物质)
本帖于 2015-11-02 21:09:31 时间, 由普通用户 大江川 编辑
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