open - air mine

• 露天矿

open - air mine的用法和样例：

例句

1. Rain has serious effect on the operation of long and narrow deep open pit.
   降雨对狭长深凹露天矿的生产有严重的影响。
2. The experimental study on blasting with water pressure in openpit mine is described in this paper.
   本文介绍水压爆破在露天矿的试验研究情况。