sinking technique

• 凿井法,凿井技术

sinking technique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。