The fracture probability was calculated also by using of Monte Carlo method of dual variable, method of JC and Monte Carlo method. The calculation results were compared and discussed.

又采用了对偶变量蒙特卡洛法、JC方法、蒙特卡洛方法计算焊接结构断裂失效概率，并比较和讨论了这些结果。

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A new method was developed using probability and statistics theory to develop a statistical filtering variable for steady state tests.

该文对滤波法进行改进，用新假设代替原不合理假设，根据数理统计理论，推导出用于稳态检测的统计量。

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A discrete method for stochastic variable (features) space of class-conditional-probability density and estimation method for class-conditional -probability distribution is proposed.

本文提出了类条件概率密度随机变量（特征）空间离散化及类条件概率分布估计方法。

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