零中频信号zero: n. (pl. zeros, zeroes) 1.【数学 ...intermediate frequency: 【无线电】中频。 signal: n. 1.信号,暗号;信号器。 2.动机,导火线 (fo ...zero intermediate frequency: 零中频zero intermediate frequency receiver: 零中频接收机下载手机词典可随时随地查词查翻译