The authors introduce a principle that the computer ocntrols the multimedia teaching centralized monitoring system by using of DTMF.This method is simple and dependable.是什么意思_The authors introduce a principle that the computer ocntrols the multimedia teaching centralized monitoring system by using of DTMF.This method is simple and dependable.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句