• The wall rock of mining roadway in Xishimen Iron Ore Mine was seriously deformed and broken in complex forms.

    西石门铁矿回采巷道围岩变形破坏严重破坏形式复杂

    youdao

  • The wall rock of mining roadway in Xishimen Iron Ore Mine was seriously deformed and broken in complex forms.

    西石门铁矿回采巷道围岩变形破坏严重破坏形式复杂

    youdao

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