短語詞組短語small -signal open-circuit output impedance 小信號開路輸出阻抗signal -to-residual output-power ratio 信號對剩余輸出功率比one -output signal 輸出信號input -output signal 入出力信號soft -output signal detection 軟輸出信號檢測output signal -to-noise ratio 輸出信號噪聲比maximum output signal -to-noise ratio 最大輸出信噪比 返回 signal output