The HCH contents in the coastal waters into which the rivers flow are the same low as those in the coastal waters into which the surface runoffs flow.
通过河流输入近岸水域和通过地表径流直接输入近岸水域的HCH含量是一样的，非常低。
Investigations of pollution load of 4 surface runoffs have been conducted, and compared with total non-point pollution load in Shanghai suburbs on the basis of pollution sources assessment.
该文对上海市郊的4种地表径流进行了调查，并在污染源评价的基础上与市郊非点源污染总量进行了比较。
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