以几何模型为研究对象，基于三维特征研究多态模型的表示和变迁机理。
Geometry model is regarded as the study object. Representation and variance of multi-state model is studied based on 3d geometry feature.
本文在简要梳理渠道结构演变轨迹的基础上，揭示了渠道结构变迁的内在机理，分析了网络营销渠道结构的一般特性。
By illustrating the changing process ot channel structure, this paper reveals the inner mechanism of channel structure change and analyzes the general feature of marketing channel structure.
会计准则变迁的路径、内在机理、影响激励、相应的对策的研究能让我们深入的理解这种变迁，在实际中更好的运用准则，在未来更好的完善准则。
The study on Accounting standards' variance routine, intrinsic mechanism, influence, and countermeasures can make us grasp its change and practice it better and improve its perfection in the future.
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