Shaft formation by long-hole blasting

 
  • 深孔爆破成井

Shaft formation by long-hole blasting的用法和样例:

例句

  1. This paper briefly intro-duced the practice of longhole blast shaft-formirg method for blind shaft sinking in Tongshan Copper Mine.
    本文简要介绍了深孔爆破成井法在铜山铜矿盲竖井掘进中的实践。

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