The major functions of the subsystem are determined and the software frame, service logic layer and data access layer of the subsystem are designed.
确定了该子系统的主要功能，并设计了子系统的软件架构、业务逻辑层以及数据存取层。
It accepts the request from the browser, requests the service from the business logic layer, generates the presentation, and responds to the browser.
它从浏览器接受请求，从业务逻辑层请求服务，生成表示并对浏览器做出响应。
Mediation in the service exposure layer can contain only non-semantic logic.
服务公开层中的中介只能包含非语义逻辑。
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