mechanized top caving mining

 
  • 綜放開採

mechanized top caving mining的用法和樣例:

例句

  1. With the increase of the depth of coal seams mined, rock bursts will easily occur in gateways with fully-mechanized sublevel caving mining.
    摘要隨著煤礦開採深度增加,綜放開採回採巷道易發生衝擊地壓危害。

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