• The influence factor of spontaneous ignition on coal seam mining and protective measures in Yangquan mine No. 3 shaft are approached.

    分析阳泉矿区矿井煤层开采自燃着火影响因素,探讨了预防煤层的自燃着火的开采技术措施

    youdao

  • The influence factor of spontaneous ignition on coal seam mining and protective measures in Yangquan mine No. 3 shaft are approached.

    分析阳泉矿区矿井煤层开采自燃着火影响因素,探讨了预防煤层的自燃着火的开采技术措施

    youdao

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