This paper explained the principle of constant-pressure water supply on the basis of characteristic curve of pipeline resistance and water pump head.

本文首先根据供水系统的管阻特性曲线和水泵扬程特性曲线，分析了恒压供水的原理；

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The cooling suit runs off of the same onboard battery that powers the suit's lamp, fan, and comm link; a pump circulates a liter of ice water (stored in a specially shaped bottle) from head to toe.

冷却装置和套服中的照明、风扇、通讯器使用同样的内置电源；一个帮浦令一公升冰水(储存在一个形状特殊的容器中)从头到脚进行循环。

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Multi-stage centrifugal pump is mainly used for high head applications environment, use deep, high-rise residential water supply, fire water supply.

多级离心泵主要用于高扬程的应用环境，应用于深井、高层住宅的供水、消防供水等。

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