上升与下降电磁阀的控制；

and an increase in decline solenoid valve control;

youdao

报警输出：常开常闭信号，控制排风扇，电磁阀信号。

Alarm output: frequent on or off signal, control exhaust fan, electrical magnetic valve signal.

youdao

用光耦和双向晶闸管控制接触器和电磁阀。

The contact and the gas valve are controlled by phototriac and triac.

youdao

采用航空电磁阀控制阀门开闭。

Air solenoid valves are used to open and close the valve.

youdao

采用航空电磁阀控制阀门开闭。

Air solenoid valves are used to open and close the valve.

youdao