Reciprocating pump discharge pipe must be before the start of the valve to open.
往复泵启动前必须将排出管路中的阀门打开。
The double acting reciprocating mud pump one time every two suction drainage action.
而双作用式泥浆泵每往复一次完成两次吸排水行动。
The double acting reciprocating mud pump one time every two suction drainage action.
而双作用式泥浆泵每往复一次完成两次吸排水行动。
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