... 间接集水区 indirect catchment area 集水区观测 watershed observation 污水集水区 sewage catchment area ...
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On the basis of observation and survey datum carried out in small watershed where is or not been mining, the influence of coal mining and related human activities on runoff and sediment load.
利用布设在开矿与非开矿小流域的观测和调查资料，对比分析了开矿对小流域径流、泥沙的影响。
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