提出了变频自动控制在节水灌溉中的应用方案，改变了传统的调整阀门开度及人工启停电机来满足供水需要的操作方法。

The traditional method to adjust the valve opening and to turn on or turn off the pump engine by people to meet the need of water supply was improved.

youdao

提出了变频自动控制在节水灌溉中的应用方案，改变了传统的调整阀门开度及人工启停电机来满足供水需要的操作方法。

The traditional method to adjust the valve opening and to turn on or turn off the pump engine by people to meet the need of water supply was improved.

youdao