We have looked at the medical aspects of runner's high which states that there is definitely a change in a person's physical state caused by the stress of running.

通过医学数据，可以证明在奔跑的紧张感下，身体的状态的确有变化。

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This model considers free surface boundary, flux boundary, horizontal flow barrier, well boundary, non-linear characteristics of soils and dynamic change of permeability coefficient with stress state.

该模型考虑了自由面边界、流量边界、基坑围护连续墙、井边界、土体非线性特性、土的渗透性随应力状态的变化。

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The paper presents the research into the stress state of roller teeth using FEM (finite element method). The results show that different structure parameter causes a change in roll stress.

采用有限单元法对轧辊辊齿的应力状态进行了研究，得出了不同结构参数对轧辊应力变化的影响。

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