房柱式采煤法
- n.bordandpillar system
- 网络room and pillar mining; post and stall; double open type face
房柱式采煤法房柱式采煤法
room and pillar mining
采矿学电子教案 ... 房式采煤法 room,chamber mining 房柱式采煤法 room and pillar mining 矿山压力显现 strata behaviors ...
post and stall
- Metalloid Toxicant的日志 - 网易博客... ... post 柱 post and stall 房柱式采煤法 post drill 柱架式凿岩机 ...
double open type face
什么意思_英语open... ... open-face halmets 面部开放型 double open type face 房柱式采煤法 open-face crown 露面冠 ...
breast and pillar
矿业工程 专业词汇英语翻译-a ... ... breast 工祖前壁 breast and pillar 房柱式采煤法 breast and pillar method 房柱式采煤法 ...
breast and pillar method
矿业工程... ... breast and pillar 房柱式采煤法 breast and pillar method 房柱式采煤法 breast mining 扒矿开采 ...