为了克服这个问题和增加新特性，Axis2 引入了 Web 服务扩展或模块的概念；其中模块的主要工作是对核心功能进行扩展。
To overcome this problem , and to add new features, Axis2 introduces the concept of Web service extensions or a module, where the main job of a module is to extend core functionality.
虽然服务组件体系结构和业务对象的概念是新的，但是实现是以标准为基础的。
While the concepts of Service Component Architecture and Business Objects are new, the implementation is standards based.
在服务器上执行任何部署或测试活动前，必须定义一个新服务器和服务器运行时，这两个都是WTP中的概念。
Before you perform any deployment or testing activities with the server, you must define a new server and server runtime, which are two WTP concepts.
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