Positive displacement pump including reciprocating pump, gear pump and screw pump, centrifugal pumps and axial flow pump belong to pump power.
容积式泵包括往复泵、螺杆泵和齿轮泵等，离心泵和轴流泵等则属于动力式泵。
Positive displacement pump including reciprocating pump, gear pump and screw pump, centrifugal pumps and axial flow pump belong to pump power.
容积式泵包括往复泵、螺杆泵和齿轮泵等，离心泵和轴流泵等则属于动力式泵。
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