煤炭开采活动
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coal mining activities 采煤活动
Support Activities for Coal Mining 煤开采支援机构
geological engineering activities of coal-mining 采煤工程地质作用
coal-mining activities
煤矿活动
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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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