If you mean it as a backup and an opportunity to return to the old state, remember that the version control system does that better.
如果你是想有一个备份用来恢复，那么记住版本控制系统做这个更加在行。
The ability to control demand would make it easier to fit large amounts of intermittent renewable energy into the electricity system without running expensive backup generation.
拥有控制需求的能力，意味着电力公司无需维持昂贵的应急发电设备，就可以较轻易的使大量间断的可再生能源回输至电力系统。
Do you have a browser or backup utility or security scanner or version-control system that serves you well when it operates on local files?
您拥有在操作本地文件时能很好地工作的浏览器、备份实用程序、安全性扫描程序或版本控制系统吗？
The backup deployment manager should only be used for operational control, since any changes made to the system are not reflected back to the original deployment manager.
备份部署管理器应仅用于操作控制，因为对系统进行的任何更改都不能反映初始的部署管理器。
Together with the technology of Access Control, redundant backup recovery and network security, it makes an allround security system.
与设置用户存取权限控制、冗余备份恢复、网络安全等多种安全策略共同建立有机的安全体系。
Study the control of backup granularity and demarcation criterion, and divide backup data to satisfy the system requirement according to backup window and system stability.
研究了备份粒度控制。讨论备份粒度的划分依据，根据备份窗口和系统稳定性划分备份数据，使备份粒度满足系统要求。
Says NASA about the flight control system: "Each of the three digital flight control computers had an analog backup."
美国宇航局说，对飞行控制系统：“这三个数字式飞行控制计算机每有一个模拟备份。”
Based on the characteristics of real estate evaluation system, system security solution from identity authentication, access control and data backup are discussed.
从房地产评估系统的特点出发，从身份认证、访问控制和数据库备份三个角度来考虑评估系统安全问题。
If these data were broken of lost, the numerical control machine tool will not work normally, so it is very important that mastering the method and techniques of the system data backup and recovering.
为确保数控机床的正常运行，掌握系统数据备份、恢复的方法和技巧是非常重要的。
If these data were broken of lost, the numerical control machine tool will not work normally, so it is very important that mastering the method and techniques of the system data backup and recovering.
为确保数控机床的正常运行，掌握系统数据备份、恢复的方法和技巧是非常重要的。
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