The paper gives a brief introduction to the interface between signal system and exit system of Line 5 of Beijing Metro, including the logical relationship and the information transfer mode.

本文简要介绍了北京地铁五号线信号系统与安全门系统的接口，包括逻辑关系及信息传递方式。

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To learn more about the 2.6 kernel work queue interface, check out this older Linux Journal article from 2003, which provides a good introduction to the API and operation of kernel work queues.

想要学习更多 2.6 内核工作队列接口的知识，请参考这篇较老的 2003年 Linux Journal 文章，它详细介绍了 API 和内核工作队列的操作。

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As we mentioned above, this is now possible in DOM Level 3 Core thanks to the introduction of a new interface called TypeInfo.

正如我们在前面提到的，在DOM Level 3 Core中现在已经可以做到这一点了，这要归功于引入了名为typeinfo的新接口。

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However, the most frequent complaints about Facebook are changes to its user interface, most recently the introduction of the Timeline feature.

CNN: Google+ trumps Facebook in customer satisfaction