backup是什么意思
adj.备用的，后补的；支持性的；伴奏的
网络释义：备份；备份当前系统；备份方式；备份的
backup怎么读（音标发音）
复数：backups
backup例句及用法
1 . Every part of the system has a backup .
系统的每个部分都有备用元件。
2 . The police had backup from the army.
警方得到了军方的增援。
来自《权威词典》
3 . She once sang backup for Madonna.
她曾经为麦当娜伴唱.
来自《简明英汉词典》
4 . Have you kept a backup of this file?
你把这文件备份了 吗 ?
来自《简明英汉词典》
5 . File in the target drived : BACKUP directory will be erased strike any key when ready.
目标驱动器标 d: BACKUP目录 内的文件将被删除,准备好后按任意键继续.
来自互联网
backup相关短语搭配
1 . 备份是差异备份
The alternatives to an incremental backup are differential backup and full backup ., 选择一个增量备份是差异备份和完全备份.
1 . 备份和
perform backup / operation , virus defense , system security auditing , change control ;执行备份和恢复，病毒防护，系统安全审核，变更控制；
1 . 备份目录
absolute path of the backup directory backup zh ., 备份目录的完整路径.
1 . 备份版本
number of stored backup versions backup en存储的备份版本数字