动圈式示波器

moving coil wattmeter moving coil galvanometer moving coil meter moving coil speaker moving oscillograph printer pen oscillograph electron oscillograph oscillograph trace oscillograph recorder electromechanical oscillograph moving-coil type oscillograph moving-coil oscillograph moving coil moving-coil ballistocardiograph moving-coil mirror galvanometer moving-coil pickup moving-coil galvanometer moving coil type loudspeaker moving coil type galvanometer moving-coil transformer moving-coil meter moving-coil instrument