Steep coal seam mining

 
  • 急倾斜

Steep coal seam mining的用法和样例:

例句

  1. Resuing is used for mining the steeply dipping narrow-vein in the Shangzhou Gold Mine of Shaanxi,has made great success and excellent economic effect.
    陕西商州市金矿采用削壁充填采矿法开采急倾斜薄矿脉,获得成功,取得良好的经济效益。

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