词语backup battery
解释备用电源
backup battery后援电池详细»
backup battery〔名词〕后备电池详细»
备用电源emergency power supply详细»
备用电源emergency power supply;reserve power supply;reserve supply;stand by power supply详细»
备用电源spare power source详细»
备用电源reserve source of electrical power详细»
备用电源emergency power supply;standby power supply详细»