resnatron谐: in harmony; in accord; in tu ...腔: cavity; chamber四极管: tetrode; quadrode; four-elec ...谐振腔四极管: resnatron四极管: [无线电] tetrode; quadrode; four-electrode tube; four-element tube◇四极管放大器 tetrode amplifier下载手机词典可随时随地查词查翻译