It serves as the signal generator in a transmitter and in a receiver, and the local oscillator is used together with a mixer to convert the received RF signal to an IF signal.是什么意思_It serves as the signal generator in a transmitter and in a receiver, and the local oscillator is used together with a mixer to convert the received RF signal to an IF signal.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句