1、溜井
... 顶部匡助炮孔roof spreader hole 溜井chute;dra shaft;orepass 庭院吊罐法掘进raising by cage iift ...
2、放矿溜井
... oremineral金属矿石 orepass放矿溜道 放矿溜井 orepipe管状矿脉 ...
3、放矿溜道
... oremining采矿 orepass放矿溜道 orepassraise英语词汇放矿上山 ...
stope orepass采场溜井
orepass tender溜井看管人
orepass blockage溜井堵塞
orepass transportation溜井运输
orepass driving溜井掘进
tunnel-orepass system平硐溜井
drift-orepass development[矿业] 平硐溜井开拓
high-deep orepass大高度溜井
blocking of drawpoint or orepass漏斗溜井堵塞