振动应力从一个最大值又回复到下一个最大值的时间过程称为一个应力周期。
... cycle of sedimentation 沉积旋回 cycle of stress 应力周期 cycle of stress reversal 反复应力周期 ...
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一个咀嚼周期结束时，牙周膜有残余应力存在。
There is some level of residual stress left after one mastication period.
本文采用一种边界积分方程法，计算了共线周期反平面裂纹的动应力强度因子。
In this paper, a boundary integral equation method is applied to compute the dynamic stress intensity factors of collinear periodic antiplane cracks.
通过改进设计，降低峰值应力，既延长了大修周期，又延长了使用寿命。
Not only the overhauling period but also the fatigue life is extended by improving the design and reducing the peak stress.
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