【摘要】 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．更多还原

【Abstract】 A means is introduced in this text to calculate directly the head loss of the liquid fluid through vari- ous pipelines by chart. This means simplifies the calculation of the head loss in the designing and sizing of rele- vant equipment and improvers the correctness of designing and sizing.更多还原