It can describe the structural, behavioral and functional knowledge of system in a single model. Moreover, the relation between behavior and function is also created in the model.
这种模型不仅可以描述系统的结构知识和性能知识，还可以描述系统的功能知识，并且建立了功能和性能之间的联系。
The value relation in educational activities is the basis of educational benefit, which forms the fundamental orientations of the structural system of educational benefit.
教育活动中的价值关系是教育效益的基础，由此生成了教育效益结构体系的基本向度。
It includes the overall interaction with customers, the relation of structural levels, inner marketing, the system of production, supply and sell and the relationship of technological cooperation.
关系营销包括：与顾客的全面互动关系、结构层次关系、内部营销、产供销垂直系统、技术合作关系等。
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