同义词
1)FDM Frequency C Division Multiplexing,频率分开多路复用，频分多工法2)FM / FDM Frequency Modulation / Frequency Division Multiplex,调频/频率分开多路复用3)OFDM Optical Frequency Division Multiplexing,光学频率分开多路复用4)frequency pisionmultiplexing,FDM,频率分多路复用5)FDME Frequency Division Multiplex Equipment,频率分开多路复用设备，频分多路复用设备6)FDMVC Frequency Division Multiplex Voice Communication,频率分开多路复用语音通信，频分多路语音通信
