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
Methods of measurement on radio receivers for various classes of emission - receivers for frequency - modulated sound broadcasting emissions 各种发射级别的无线电接收机的测量方法.调频声音广播发射接收机
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Methods of measurement on radio receivers for various classes of emission - part 4 : receivers for frequency - modulated sound broadcasting emissions 各种发射类别的无线电接收机的测量方法.第4部分:调频声音广播接收机的射频测量