The differential equation of pump station start-up transient is established and derived from discharge balance and moment equation of pump unit.

本文从水量平衡及水泵机组力矩方程出发，建立起水泵从起动到同步的微分方程序。

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Imersion oil electric pump unit is a kind of oil jack with rodless deep extraction, large discharge capacity and high lift.

潜油电泵机组是一种无杆深抽、排量大、扬程高的抽油设备。

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Strong self-suction pump is a kind of mechanical self-suction pump with unique vacuum unit. It can discharge completely air of suction side making running conditions for the pump.

强自吸泵为机械式自吸泵，具有独特的吸真空装置，可将泵的吸入侧空气排净，达到泵正常运转的条件。

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