By-passing to control the pressure at a constant speed is easily accomplished, but it wastes power.

容易实现用旁通控制在恒定转速下的压力，但旁通浪费能量。

youdao

By-passing to control the pressure at a constant speed is easily accomplished, but it wastes power.

容易实现用旁通控制在恒定转速下的压力，但旁通浪费能量。

youdao