common roadway 中文意思是什麼
common roadway
解釋
共用平巷-
Rules and support ways of roadway support and wall rock common loading
巷道支架與圍巖共同承載的規律與支護方式 -
Mining technique of combined arrangement of coal seam with entry and inclined roadway in common sublevel
煤層與共用區段平巷斜巷聯系布置開采技術應用
分享友人