Close shutoff valve No. 2 then shut off valve No. 1 on test assembly.
关闭2号关闭阀，然后关闭测试总成上的1号阀门。
The Research on the Electro-hydraulic Control System with High-speed ON/OFF Valve;
研究了一种利用高速开关阀对节气门进行电子控制的系统方案。
Alarm output: frequent on or off signal, control exhaust fan, electrical magnetic valve signal.
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.
报警输出：常开常闭信号，控制排风扇，电磁阀信号。
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