In realization, topology class, layer class, branch class etc are designed based on the object-oriented technique, and based on this, the topology and the method realizes.
在实现的过程中，基于面向对象技术设计了拓扑类、层类、支路类等，并以此为基础实现了拓扑和算法。
Base class for attributes that define how properties of types in the object layer are mapped to the properties of entity types or complex types in the conceptual model.
特性的基类，这些特性定义如何将对象层中的类型映射到概念模型中的实体类型和复杂类型。
The COM class template creates a new class, and then configures your project to generate the class and interoperability layer as a COM object and register it with the operating system.
com类模板创建一个新类，然后配置您的项目以生成作为COM对象的类和操作性层并在操作系统注册。
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