bench mining
短語詞組
- bench h mining 階梯式開采
- composite -bench mining 組合臺階開采
- open bench mining 露天臺階式開采
- overhand bench mining method 上向梯段采礦法
- grouped bench mining 組合臺階開采
- underground bench mining 井下梯段采礦法
- surface bench mining 露天臺階開采
- high -bench mining 高臺階開采
- high bench mining 高臺階開采 返回 bench mining