Tells about the importance of matrix rectangular in the safety and stable broadcasting of the front system of CATV from the model choices of matrix rectangular and the arrangement of proper position.
根据有关实例，从矩阵切换台的选型，切换台位置的合理安排，阐述矩阵切换台在有线前端系统中的应用以及在安全、稳定播出中的重要地位。
In particular, you will often have multiple choices about how to structure your use case model 11; when you do, align your use case model with the above attributes.
特别地，你将时常会有关于如何构建用例模型11的多种选择；当你这样做时，用上述的属性定位你的用例模型。
Choices also exist in the adoption of a business data model, whether XML-based, proprietary, or custom.
业务数据模型的采用也同样需要选择，是采用基于XML的、专有的还是自定义的。
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