back-up system

常见例句

This is a back-up system for world agriculture.
这是全球农业的储备系统。
BlackBerry users cursed their devices, which stopped working because of problems at servers for which a back-up system failed to work.
黑莓用户最近对其运营商骂声不断，这主要是因为手机服务器的备份系统不工作而使手机无法正常工作。
If system breakdowns or failures would result in the permanent loss of records, a back-up system should be provided.
如果计算机的故障或失效会导致记录的永久丢失，则应当提供备份系统。
zhuyujiao1972.blog.163.com

The Post reported that a malfunction in Mir's attitude-control system also occurred in March, causing it to list until an alternate back-up system was activated.
CENTERFORSECURITYPOLICY: Center For Security Policy
And yet it is a miracle that Voyager 2 managed to send anything back at all, for its main radio system failed soon after launch, and its back-up system proved to be faulty.
ECONOMIST: The long arm of the celestial repairman
This means that if energy is required on a constant basis then the system needs to be backed-up by conventional sources of power 73% of the time, and there are days when the back-up system is required for more than 90% of the time (In Germany, the industry association insists that renewables uptime averages 10%).
FORBES: Why "Green Fossils" Matter So Much To Africa's Energy Future