短語詞組短語manual backup control system 手動備用控制系統(tǒng)backup p system 后備系統(tǒng);輔助系統(tǒng)backup for system 系統(tǒng)備份backup expert system 后臺專家系統(tǒng)backup coolant system 備用冷卻劑系統(tǒng)backup safety system 備用安全系統(tǒng)quick backup recovery system 單鍵回復(fù)設(shè)定;單鍵回覆設(shè)定backup acquisition system [自]后援采集系統(tǒng);后備采集系統(tǒng)The Backup Test system 備份測試系統(tǒng) 返回 backup system