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介绍了一种利用图表来直接查算流体在各种管路中流动时所产生场程（水头）损失的图解法，此方法简便了有关设备在设计和选型中对扬程损失的计算，大大提高了设备设计和选型的正确性．
This paper introduces a graphical method to directly calculate the loss of field (head) generated when the fluid flows in various pipelines by using the chart. This method is simple and easy to calculate the head loss in the design and selection of the equipment. Improve the accuracy of equipment design and selection.