Part of the process of defining the model was to standardize on a set of common metadata properties (such as title, description, authors, and so on) which are common across all content types.
定义模型的部分过程是标准化一组通用元数据属性（如标题、说明和作者等），这些属性是所有内容类型中所通用的。
In part, this is achieved by leveraging the SCA programming model, which enables treating different types of services with one description and deployment mechanism.
在某种程度上来说，这个目标是通过利用SCA编程模型实现的，该模型允许使用一个描述和部署机制处理不同类型的服务。
The following sections include a detailed description and usage of these types with respect to a sample topology model that you build during the course of this article.
下面的部分包括对您在编写这篇文章过程中构建的样本拓扑模型相关类型的使用和详细描述。
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