短語詞組短語back -up p battery 備用電源A back -up battery 備用電池lithium back up battery 鋰回電池;鋰電池備份battery back up 備用電池BATTERY BACK UP SIREN 自備電池警報器battery back -up 備用電池;電池供電NEODYMIUM BATTERY BACK UP SIREN 釹鐵硼自備電池警報器 返回 back up battery