When the service is deployed, modules can be engaged to the service by putting a small entry in the descriptor.
部署服务后，可以通过在描述符中加入一个较小的条目来使模块参与到服务中。
2
Because you have created your Web application from an existing Web application, the appropriate entry for this servlet already exists in the Web deployment descriptor.
The lower work product Usage view shows the process's work products, defining for every work product descriptor the state at the beginning (entry) and end (exit) of every activity.
Work Product Usage视图显示了流程的工作产品，为每个工作产品描述符在每一个活动中定义开始(入口)和结束(出口)状态。