1) tunneling combined with drilling
坑钻结合
2) combined gallery-drill technology
坑钻联合
4) drilling in pit
坑内钻探
1.
By using drilling in pit,ore reserve classification is increased,risks of underground mining engineering are reduced and avoided.
主要阐述了矿区通过实施坑内钻探,提高储量级别,降低和避免井下采矿工程风险,节约了成本,增加了效益。
5) counterbore cutter
柱坑钻头
6) bore pit
钻探坑
补充资料：冻土钻(见取土钻)
冻土钻(见取土钻)
dongtuzuan冻土钻见取土钻
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条