XPCOM registers new components.
XPCOM注册新的组件。
XPCOM frees all global services.
XPCOM释放所有全局服务。
XPCOM sends a notification that it's beginning startup.
XPCOM发送一个它正在被启动的通知。
XPCOM fires a shutdown notification to all registered observers.
XPCOM发出关闭通知给所有注册的观察者。
Another reason for much of the complexity in Gecko is the use of XPCOM, a powerful component system.
Gecko过于复杂的另外一个原因是XPCOM，一个强大的组件系统。
One layer above the core object is the factory code. The factory object provides a basic abstraction of the core XPCOM object.
核心对象的上一层是工厂代码层。工厂对象提供了核心XPCOM对象的基本抽象。
XPCOM is like an onion. XPCOM components have at least three layers. From the innermost and moving outward these layers include.
XPCOM就像是洋葱。XPCOM组件至少要有三层。这从里到外三层包括。
Usage of XPCOM has been decreased in many places over the years, and its resource overhead was reduced by the new cycle collector.
对XPCOM的使用被大大减少，XPCOM对资源的占用通过一个新的循环回收器得到减低。
You can do that, but you need to use XPCOM to bind to external libraries, and doing that reduces portability — or at least makes things more difficult.
您可以这样做，但是需要使用XPCOM绑定到外部库，而这样会降低可移植性，或者至少增加了移植的难度。
The scope of this book goes beyond XUL itself, but it is an excellent, freely available publication that explains the overall XPCOM architecture, including XUL.
这本书的范围超出了XUL本身，但它是一个非常棒的、可免费获得的出版物，介绍了整个 XPCOM体系结构，也包括 XUL。
In a development that is mostly of interest to those who develop Mozilla extensions, there is now a SAX parser framework for the XPCOM component system of Mozilla.
对于那些开发Mozilla扩展的人来说，最有意义的是MozillaXPCOM组件系统现在提供了一个SAX解析器框架。
Accordingly, the book is arranged so that you can follow along and create your own components or learn about different XPCOM topics individually, as in a reference work.
相应的，这本书按照下面的方式来组织：你既可以把它当作教程来跟随学习，也可以把它当作参考手册，以单独的学习不同的xpcom的主题。
Accordingly, the book is arranged so that you can follow along and create your own components or learn about different XPCOM topics individually, as in a reference work.
相应的，这本书按照下面的方式来组织：你既可以把它当作教程来跟随学习，也可以把它当作参考手册，以单独的学习不同的xpcom的主题。
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