房柱式開采 的英文怎麼說
中文拼音 [fángzhùshìkāicǎi]
房柱式開采
英文
room and pillar mining-
Application of pedrail - walking type hydraulic supports in board and pillar mining method
房柱式開采中履帶行走式液壓支架的應用Study of mine pressure with room - pillar mining in nantun coal mine
南屯煤礦房柱式開采礦山壓力研究Heading and stall method
房柱式開采法
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