frequency-modulated carrier current telephony frequency-modulated carrier-curr-ent telephony
Related Translations:
调频: frequency modulation (fm); frequency adjustment◇调频磁带录音机 f.m. magnetic tape recorder; 调频电台 fm radio station; 调频广播 fm broadcast; 调频广播波段 frequency-modulation broadcast band; 调频接收机 frequency-m