?拍频振荡器
... 混频振荡器 mixing oscillator 拍频振荡器 beat frepuency oscillator; beat frequencu oscillator; beating oscillator; bfo beat frequency oscillator; bo beat oscillator 扫频振荡器 frequency sweep generator; frequency sweeping oscillator; frequency-sweegenerator; frequencyswept oscillator; fso frequency sweeoscillator; sweep frequency oscillator; sweeper; swept frequency oscillator ...