back-up

短语词组

短语

back shoot -up 后上
back -up credit 备用信贷
weld back -up 焊缝背垫
Back -up tongs 内钳
backup and recovery 备份与恢复
backup and restore 备份与还原
backup system 备用系统；后备系统
backup roll 支承辊；背辊；压辊
backup copy 副本；备份件
backup file 备份文件
backup software 文件备份
backup device 备份设备；备用设备
full backup 全部备份
system backup 系统备份；系统后备
backup storage n . 后备存储器
file backup 文件备份；档案备份