本文研究由两组n维独立且异质的样本产生的二阶次序统计量的失效率序。考虑在多元离群值模型的假设下,修正的比例失效率尺度参数不同和两组不同样本量的多元离群值下的随机比较。In this paper, we study the failure order of the second order statistics generated by two groups of n-dimensional independent and heterogeneous samples. Considering the assumption of the multivariate outlier model, the modified proportional failure rate scale parameters and the stochastic comparison of the multiple outliers of two groups with different sample sizes are studied.