恒定平均流量的脉动流

Pulsating flow of mean constant flow - rate

可求解水利计算中日平均水位和日平均流量，本程序采用的是面积包围法。

Can solve water daily average calculation of the average water level and flow , the procedure was used in an area surrounded by law.

高速开关阀采用脉宽调制（PWM）原理来控制其平均流量，极易实现计算机控制技术和液压技术的有机结合。

The average flux of the PWM high-speed on-off valve are regulated by the Pulse-Width Modulation theory and it is easy to combine the computer and hydraulic control technology.

利用多因子逐步回归周期分析法建立长江宜昌站年平均流量的中长期水文预报模型。

A medium and long-term hydrological forecast model of the mean annual discharge at Yichang station on the Yangtze River was established using the multi-factor stepwise regression cycle analysis.