Tongshan的用法和样例：
例句
用作名词 (n.)
- Sill pillared mining has been used in Tongshan Copper Mine where high tonnage of ore has been reserved in the sill pillars.
铜山铜矿采用有底柱采矿法留下的底柱矿石量较大。 - 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。
