W type ac, dc hydraulic power unit adopts the international popular k, special type gear pumps, pump motor, with more than 20 streamlined oil tank can satisfy different types of design.

型交、直流液压动力单元采用国际流行的K型齿轮泵，专用油泵电机，流线型油箱，具有20多种油路设计可满足不同类型的需要。

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Based on the characteristics of pump assembly, the influences of hydraulic resistance of trash rack and feculence on pump unit operation are investigated.

根据水泵装置特性研究了拦污栅及其污物阻水对泵机组运行的影响。

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FHPSS consists of hydraulic pump, initiative valve, steering control unit, steering cylinder and so on.

全液压转向系统是由液压泵、优先阀、转向器、转向油缸以及相关的转向机构组成。

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