房柱式开采 meaning in English
room and pillar mining
Examples
- Study of mine pressure with room - pillar mining in nantun coal mine
南屯煤矿房柱式开采矿山压力研究 - Heading and stall method
房柱式开采法 - Application of pedrail - walking type hydraulic supports in board and pillar mining method
房柱式开采中履带行走式液压支架的应用