基本: basic; fundamental频率: frequency; rate指示器: indicator; pointer; director ...频率指示器: frequency indicating device; frequency indicator; indicating frequency meter零频率指示器: null-frequency indicator电源频率指示器: mai frequency indicator; mains frequency indicator晶体频率指示器: cfi crystal frequency indicator; crystal frequency indicator频道频率指示器: channel frequency indicator谐振式频率指示器: resonant circuit type frequency indicator中心频率指示器: mid frequency indicator基本频率: base frequency; basic frequency; elementary-frequency; fundamental frequency; master frequency基本频率标准: primary frequency standard晶体基本频率: crystal fundamental谐振电路型频率指示器: resonant-circuit tyep frequency indicator远读波道频率指示器: remote channel frequency indicator基本频率（或自然频率）: fundamental or natural frequency比率指示器: ratio indicator; ratio-type indicator变率指示器: rate-of-change indicator功率指示器: power indicator; power level detector; power level indicator速率指示器: rate indicator; rate of flow indicator; speed indicator心率指示器: heart rate indicator频率指示: frequency indication频率指示计: frequency indicator; indicating frequency meter晶体变频指示器晶体频率指示器: crystal frequency indicator导电率指示器: conductivity indicator
