描述了长输管线中泵非正常停运下，各点的压力和流量计算程序-Describes the long-distance pipeline outage in the pump non-normal, the various points of pressure and flow calculation procedure

有个朋友看了我自己做的小闹钟，让我帮他做一个控制泵的定时器，就是设置好泵转多长时间然后停多长时间，让泵这样循环往复的走走停停，我就拿我的小闹钟改了一个，原来的蜂鸣器改成了继电器。-A friend saw my own small alarm clock, let me help him make a timer to control pump is set up to pump more and more time and then stopped a long time, let the p

计算管内压力，实现起停泵过程中管内压力波动计算(Calculation of pressure fluctuation in the process of starting or stopping pump)