shaft equipment establishment的意思|示意
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竖井设备设置
shaft equipment establishment的网络常见释义
井筒装备安装 煤矿竖井井筒装备制定施工方案须注意的问题 关键词:煤矿竖井,井筒装备安装,施工方案,问题 [gap=433]Key words:coal mine vertical shaft, shaft equipment establishment, constructin scheme, problem