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对典型的给水方式进行分析，剖析能量转换过程．以实际例子展示水泵选型、管材、管径等因素对能量转换效率的影响程度，最后探讨提高能量转换效率的方法．
Analyze the typical water supply method and analyze the energy conversion process. Practical examples are given to illustrate the influence of the pump selection, pipe material and pipe diameter on the energy conversion efficiency. Finally, the methods to improve the energy conversion efficiency are discussed.