磨坊过去依赖风力或水力操作。

Mills used to depend on wind power or water power.

youdao

进口遥控浮球阀是兼具多种功能的水力操作式阀门。

Remote control float valve is a hydraulic operation valve with multiple functions.

youdao

利用水力自动操作，即可以作泄压阀用又可作持压阀用。

The use of automatic hydraulic operation, which can be used for pressure relief valve can also be used as a holding pressure valve.

youdao