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本文针对扭转振动应力概念上的一些不同认识，运用离散系统模型以及连续系统模型的概念，探讨并理论上证明了物系节点处的力学特征。
In this paper, some different concepts on the concept of torsional vibration stress are applied. By using the concepts of discrete system model and continuous system model, the mechanical characteristics of object nodes are discussed and theoretically proved.