gate-road in the bottom slicing的意思|示意
美 / /
英 / /
gate-road in the bottom slicing的网络常见释义
下分层回采巷道 ... 关键词: 锚杆支护;下分层回采巷道;围岩稳定性;钢管混凝土[gap=985]Key words: bolting; gate-road in the bottom slicing; stability of surrounding rock; concrete-filled steel tube..