频率: frequency; rate计: count; compute; calculate; n ...频率表频率计: frequency meter标准频率计: standard-frequency meter测频计;频率计: frequency meter差频频率计: beat frequency meter差示频率计: differential frequency meter低频频率计: low-frequency meter电声频率计: electroacoustic frequency meter电子频率计: electrionic frequency meter frecuencimetro electronico; electronic frequency meter感应频率计: induction frequency meter共振频率计: tuned circuit type frequency meter合成频率计: synthesizer frequency meter积量频率计: integrating frequency meter; master frequency meter记录频率计: recording frequency meter检波频率计: detector frequency meter精密频率计: precision frequency meter绝对频率计: absolute frequency meter空腔频率计: cavity freqeney meter; cavity frequency meter宽带频率计: wide-range frequency meter脉冲频率计: countingrate meter; pulse rate meter频率计划: frequency plan频率计量学: frequency metrology频率计权: frequency weighting频率计数表: counting frequency meter