服务层由 SOA中定义的所有服务构成，其中，服务仅仅是对一个或多个与业务一致的 IT功能（操作）的抽象规范。
The services layer consists of all the services defined within the SOA where a service is just an abstract specification of one or more business-aligned IT functions (operations).
服务层由 SOA中定义的所有服务构成，其中，服务仅仅是对一个或多个与业务一致的 IT功能（操作）的抽象规范。
The services layer consists of all the services defined within the SOA where a service is just an abstract specification of one or more business-aligned IT functions (operations).
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