它从需求管理，需求分解和需求分配开始。
It starts with requirements management, decomposition and allocation.
通过关注点分离，可以将集成需求分解为更细粒度的服务。
Through separation of concerns, integration requirements are decomposed into more granular services.
我们将在功能上分解系统，分解成需求层级中的功能（需求分解）。
We would functionally decompose the system to break out functions in a hierarchy of requirements (requirements decomposition).
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