In our ideal situation, each component knows nothing about any other component and deals with other areas of the application only through abstractinterfaces.
在理想情况下，每个组件不知道其它组件，而处理应用程序的其它区域只是通过抽象接口。
2
The concepts behind web services help you design loosely coupled services with abstractinterfaces, thus decoupling service implementation from service definition.
Web 服务背后的概念帮助您使用抽象的接口设计松散耦合的服务，这样就可以把服务实现与服务定义分开。
3
These ports support the definition of composite structures with clear but abstractinterfaces that define the services "provided" to, or "required" by your customers.