短語詞組短語balancing g potentiometer 平衡電位計self -balancing potentiometer recorder 自平衡電位計式記錄器self balancing potentiometer 自動平衡電位計capacitance balancing potentiometer 電容均衡電位計indicating self -balancing potentiometer [電子]自平衡式指示電位計 返回 balancing potentiometer