UML Modeler 层包含了，管理平台的 UML 建模环境所需要的类和接口。
The UML Modeler layer includes the classes and interfaces required to manage the platform's UML modeling environment.
工具层：在本层，可管理端点(设备、软件服务等)可通过JMX指定的接口访问。
Instrumentation level: in this level, the manageable endpoints (device, software service, and so on) are made accessible through JMX-specified interfaces.
在业务层，我们已有BusinessLayerProxy，它实现了IBusinessLayer接口并充当了整个业务层的管理者或控制器(如图4所示)。
In the business layer we already have a BusinessLayerProxy, which realizes the IBusinessLayer interface and ACTS as a manager or controller for the entire business layer (see Figure 4).
应用推荐