短語詞組短語cathode e heater 陰極加熱器cathode e heater assembly 陰極加熱器cathode -heater i ulation resistance 絲極絕緣電阻Cathode -Heater Voltage 陰極cathode heater assembly 陰極加熱器cathode heater tube 旁熱式電子管heater cathode 旁熱式陰極;直熱式陰極 返回 cathode heater