Presentation layer objects will depend on service layer objects, which will themselves depend on other service objects and data access objects, etc.

表示层对象会依赖于服务层对象，而这些服务层对象又依赖于其它服务对象和数据访问对象等。

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Figure 6 shows the relationship of the encompassing integration layer to the service exposure layer, the provider creation layer, existing providers, service specifications, and service realizations.

图6展示了集成层与服务公开层、提供者创建层、现有提供者、服务规范和服务实现的关系。

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Service layer: On top of the IMS network architecture, we have the service layer.

服务层：在IMS网络体系结构之上是服务层。

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On the contrary I think Nokia needs to focus on its service layer and on innovating there.

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With private clouds, enterprises maintain all the equipment and software, while seeking to offer resources through a virtualized service layer.

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In fact as a service layer they are quite weak.

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