corner coal pillar working face的意思|示意

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角煤柱工作面


corner coal pillar working face的网络常见释义

边角煤柱工作面 ... 边角煤柱工作面;孤岛型;反弧形覆岩结构;冲击矿压;非对称控制 [gap=1323]Keywords : corner coal pillar working face;island type;anti-arc overlying strata structure;rock burst;non-symmetric contro..