Thermal stress is bigger at bottom and on the top of building, and thermal stress is less in the middle of building.

温度应力总是在建筑物底层和顶部几层的应力较大，而建筑中部楼层的温度应力较小。

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Optimized design of rail wheel and axle is finished. Conclusion This result satisfies our national railway standard. The maximum stress is less than the yield stress.

结论实现火车轮轴的优化设计，优化后轮轴的最大应力均小于屈服应力，满足我国铁路的标准要求。

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Stress concentration occurs in surrounding rocks, while the maximum tension stress is less than the tensile strength of rock mass, so tensile crack does not take place.

动荷载作用下地下硐室群围岩出现较大的应力集中，但最大拉应力小于岩体的抗拉强度，地下硐室群围岩不会出现拉裂破坏。

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Women have the same levels of cortisol as men, but their stress response is triggered less by competitive failures and more by problems in their personal lives.

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Less stress is worth a lot.

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The densest wood is on the outside, where bending stress is the greatest, while the center is porous and weighs less.

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