stiffness regularity的用法和样例：
例句
- Considering the time-variant mesh stiffness, the calculated results demonstrated the change of tooth root bending stress in one engagement period.
计算结果揭示了由于时变啮合刚度的影响齿根弯曲应力在一个啮合周期的变化规律。 - Some statistic laws are discussed about the gravity dam's seismic responses of accelerations and stresses changing with the dam height and the foundation stiffness.
同时分析了重力坝地震响应加速度和动应力随坝高和坝基刚度变化的统计规律。
