动力式泵，是通过泵轴转动时带动各种叶片旋转的泵，也称做叶片式泵和叶轮式泵。其产生的扬程随输送流体介质的流量而变化。最常见的有离心泵、轴流泵、混流泵和旋涡泵等。
总的来说，容积泵的效率高于动力式泵。
In general, the volumetric efficiency of pump power higher than the pump.
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.
公司的科研小组，正在采用先进泵式喂料系统，为大型飞行器，研制动力更加强大的引擎，现在正在为商业客户的需求，进行飞行测试实验。
The XCOR team then developed a more powerful engine with an advanced pump-fed fuel system for a larger aircraft now being flight-tested for a commercial customer.
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