This will return null only when focus has been set to "no component."
这样，只有当焦点被设置成“无组件（no component）”时才会返回空。
If there is no component alias, no implicit authentication will occur.
如果没有组件别名，则不会出现隐式身份验证。
No component or content is directly rendered in the page design.
组件和内容都不是直接呈现在页面设计中。
No component matching is required and all passive element feature a low sensitivity.
不需要元件匹配，所有无源器件的灵敏度都非常低。
No component was damaged and input fuse shall not blow when LED driver is powered on.
开机瞬间任何零件以及保险丝不得烧毁。
No component matching is required and the sensitivities are low all of the passive parts.
不需要元件匹配，所有无源器件的灵敏度都非常低。
No component matching is required and the sensitivities are low all of the passive parts.
不需要元件匹配，所有无源器件的灵敏度都非常低。
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