pulse code modulation frequency modulation  脉码调频调变

frequency-modulation frequency converter  频率调制与转换

(light-)frequency modulation  光频调制

4-level frequency modulation (4-level FM)  四电平调频

AC frequency modulation for motor speed regulation  交流变频调速

amplitude and frequency modulation  幅频调制; 鍅

Amplitude Modulation and Frequency Modulation model  电磁暂态及电力电子仿真程序; 调幅－调频模型

analog Pulse Frequency Modulation  图基

analog subcarrier frequency modulation(FM-IM)  模拟次载波频率调变

audio frequency modulation  声频调变

balanced frequency modulation detector  平衡调频检波器

broadcast frequency  科罗拉多金花虫; 广播频点; 广播频率

Chaotic Frequency Modulation  混沌频率调制; 混沌调频

chaotic frequency modulation signal  混沌调频信号

coefficient of frequency modulation  调频系数

Complete Transistor Frequency Modulation Transmitter  全固态FM发射机

cosine frequency modulation signals  余弦调频信号

differential space-frequency modulation(DSFM)  差分空频调制

digital audio frequency broadcast  数字音频广播