... draining solenoid valve 放泄电磁阀 draining sump 泄水井泄油柜 draining system 泄水系统 ...
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The new-type of hose pulsating pump is used for underground face draining and sump cleaning.
采用新型软管壁外脉动泵进行井下工作面排水及水仓清理。
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