The technique presented in this paper has been tested in Wang-pai gold mine and had got a excellent result.

结合王排金矿采矿方法进行试验，取得了较好的经济效果。

youdao

The technique presented in this paper has been tested in Wang-pai gold mine and had got a excellent result.

结合王排金矿采矿方法进行试验，取得了较好的经济效果。

youdao