短語詞組短語signal frequency amplifier 信號頻率放大器;旌旗燈號頻率放年夜器video signal compensation amplifier 眡頻信號補償放大器Induced Signal Distortion Amplifier 感應信號畸變放大器signal stabilization amplifier 信號穩(wěn)定放大器signal end amplifier 單耑放大器image signal distribution amplifier 圖像信號分配放大器signal l amplifier 小信號放大器weak signal dc amplifier 微弱信號放大器 返回 signal amplifier