房柱式采煤法 meaning in Chinese
bordandpillar system
breast and pillar method
post and stall
room and pillar
Examples
- Technical analysis on feasibility of new room and pillar mining method
新型房柱式采煤法可行性技术分析 - Post and stall
房柱式采煤法
bordandpillar system
breast and pillar method
post and stall
room and pillar