Power Fail Time的意思|示意

In the long term, trying to power entire cities with machines like this would be difficult, largely because even in the best locations, the wind will fail at least 5 percent of the time.

从长远来看，试图用这样的机器来为整个城市提供电力会很难，这主要是因为即使在最好的位置，还是会有至少百分之五的时间风会失效。

Proved the reliable method that t realizes power fail protection in normal cases at the same time.

同时说明了在正常情况下实现掉电保护的可靠方法。