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对极值 I型分布场合 ,排除形状参数与加速应力无关的限制 ,进行恒加应力寿命试验统计分析 ,给出正常应力水平下寿命分布的参数及变异系数估计 .
For extreme I type distribution, the limit of shape parameters and acceleration stress is excluded, and the statistic analysis of constant stress and stress life test is carried out. The parameters of life distribution and the coefficient of variation coefficient are given under normal stress level.