The two basic modes of mathematical model-behavior mode and state variable mode, along with the isomorphic and homomorphic relation between models and real system are described.
系统数学模型的基本模式：行为模式和状态变量模式以及在状态变量模式下的同构与同态系统；
In other words the basic idea is to recreate a model of the musical instrument and produce the sound by simulating its behavior as a mechanical system.
换言之，基本想法是重新建立乐器模型并模拟其作为机械系统之情形。
Secondly, on the basis of in the literature, make the basic contact of relationship quality, behavior of the distributors and cooperation performance and extract the conceptual model and assumptions.
其次，在文献研究的基础上，对关系品质、分销商自发行为与合作绩效三者建立基本的联系，并提出了概念模型和相应的研究假设。
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