本文向您展示如何识别发生挂起的组件，并判定挂起是因为用户错误、设计错误，还是因为产品中的缺陷。
This article shows you how to identify the component where the hang occurs and determine whether it is due to user error, programming error, or a bug in the product.
守门指的是采用甄别程序识别什么产品如何进入退货流。
Gatekeeping refers to the screening procedures employed to identify how, and which, products enter the return stream.
回顾残留的任务和产品，识别如何制作它们的简化版本。
Review the remaining tasks and products to identify how to make lighter-weight versions of them.
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