By adjusting main drain off water pump flow quantity, this paper makes main drain off water equip running safe, economy, saving investment.
通过调整矿井主排水泵流量，使矿井主排水设备安全经济运行，节约投。
By adjusting main drain off water pump flow quantity, this paper makes main drain off water equip running safe, economy, saving investment.
通过调整矿井主排水泵流量，使矿井主排水设备安全经济运行，节约投。
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