Photo resistor(FZ711G) are ingenious combinated with signal relay (WE77/Exl Bi) The detection ultraviolet light is replaced by visible light. The problem of frequent false alarms caused by dowtherm boiler flame detector is resolved.是什么意思_Photo resistor(FZ711G) are ingenious combinated with signal relay (WE77/Exl Bi) The detection ultraviolet light is replaced by visible light. The problem of frequent false alarms caused by dowtherm boiler flame detector is resolved.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句