Temperature Rate of Chang)（4）驻留时间(Dwell Time)（5）风速(Airflow Velocities)（6）应力均匀度(Uniformity of Stress)（7）功能测试与否(Product Operating Condition) 温变率及循环数对筛选率的比较：说明：假设高低温差(R)固定的条件下，其循环..
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在理想状态形状模型的基础上，提出了通过改变膜厚度方式改进反射面应力均匀度的方法，确定了最佳的反射面厚度变化规律。
Based on the ideal shape model, variable thickness method is used to improve the uniformity of stress distribution of reflector, and the best thickness variation is determined.
本文以表征汽车车架动应力不均匀度为目标函数，以截面尺寸的大小为设计变量，对车架进行了优化设计。
This paper deals with optimal design of a vehicle frame. The unevenness of the dynamic stresses in vehicle frame is taken as objective function and the size of cross -section as design variable.
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