The paper expatiated the character of drainage area water in China and the situation of pollution, the malpractice of existing fathering system and the method for solving the problem.
本文阐述了中国流域水的特点和污染的现状，现存治污制度的弊病以及解决的方法。
Based on the monitoring in 1998, the character of water pollution in Heihe section of Heilongjiang River was analysed.
以1998年黑龙江黑河段监测数据为基础，简述了黑龙江黑河段水环境污染特征及形成原因。
Agricultural pollution has a tridimension character of the complicated cycling system composed of water, soil, biosystem and atmosphere.
由于农业污染呈现水体、土地、 生物、大气的大循环体的立体污染的特点。
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