Electric Actuator - An electromechanical device used to actuate (open, close, or modulate) a valve.An electric motor and gear train is used to actuate the valve.是什么意思_Electric Actuator - An electromechanical device used to actuate (open, close, or modulate) a valve.An electric motor and gear train is used to actuate the valve.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句