竖井钻机

  • 网络Shaft drill;shaft boring maehine
竖井钻机竖井钻机
  1. 我国煤矿竖井钻机的发展

    Development of Coal Mine Shaft Drilling Machine in Our Country

  2. 新型煤矿竖井钻机在深厚冲击层大井径井筒施工中的应用

    Application of New Drilling Shaft Machine in Big Diameter Shaft of Deep Alluvium