| 释义 |
Tongshan
基本例句
n.铜山
用作名词Sill pillared mining has been used inTongshanCopper 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 inTongshanCopper 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。 |