This means that if a value is stored in a short-term scope, such as page or request scope, it will be absent by the time the JSF life cycle arrives at the Restore View phase.

这意味着如果一个值是短期作用域存储的，例如页面或请求作用域，那么当JSF生命周期到达Restore View阶段时，这个值将消失。

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Able to directly control AC 50Hz, 380V asynchronous motor with the protection of overload, phase-failure and voltage-absent.

可控制交流50Hz，380V，三相异步电动机的直接起动停止，并具有过载和 断相及失压保护。

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