This layer contains software components, and each of which are the realization of a service or operation for a service.

此层包括软件组件，每一个组件都是服务的实现或对服务的操作。

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This layer contains software components, and each of which are the realization of a service or operation for a service.

此层包括软件组件，每一个组件都是服务的实现或对服务的操作。

youdao