deep or mid-depth hole的用法和樣例:
例句
- The new method adopted roof presupporting,deep and medium hole blasting,LHD ore removal and tailings filling.
該采礦方法采用采場(chǎng)預控頂技術(shù),中深孔爆破,鏟運機出礦,尾砂充填。 - Test Research on Parameter Optimization for Long and Medium Hole Drilling and Blasting in Sanxin Co.
三鑫公司中深孔鑿巖爆破參數優(yōu)化與試驗研究。