Closed water systems, vertical with the process, the level of different programs, dual control, single-stage pumps, variable flow system.

水系统选择闭式、竖直同程、水平异程序、双管制、单级泵，变流量系统。

youdao

Closed water systems, vertical with the process, the level of different programs, dual control, single-stage pumps, variable flow system.

水系统选择闭式、竖直同程、水平异程序、双管制、单级泵，变流量系统。

youdao