如果选择自定义安装，则可以选择和取消要安装的组件和特性。
If you choose custom installation, then you can select and de-select the components and features you want to install.
可以通过两种方法使用OSGi技术来实现模块式的、面向服务的组件和特性。
You enable modular service-oriented components and features with OSGi technology in a couple of ways.
在本系列的第4部分中，我们将探索更多的版本控制特性，比如条件包含和组件覆盖。
In Part 4 of the series, we will explore more versioning features such as conditional inclusion and component override.
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