A proportional directional valve however will be controlled by an electrical device more like a dimmer switch.

一个比例方向阀是由与一个与调光开关非常象的电设备控制的。

youdao

A proportional directional valve however will be controlled by an electrical device more like a dimmer switch.

一个比例方向阀是由与一个与调光开关非常象的电设备控制的。

youdao