给出了正态总体均值和标准差的最大似然估计（M LE），似然比检验统计量及其渐近分布等结果。
The maximum likelihood estimators(MLE) of means and standard deviations, and the asymptotic distribution of likelihood ratio statistic were given.
然后，给出了这种结构的最大滑移反应的均值和标准差，并给出了这种结构的滑移反应谱。
Then, the mean values and standard deviations of the maximum sliding displacement response of the structures are given, and the sliding displacement response spectra of the structures are drawn.
轨道不平顺最大值用于紧急补修评价指标，区段的标准差用于大型养路机作业的评价指标。
Maximum track irregularity is the evaluate index in emergency maintenance and standard deviation of section track irregularity is the evaluate index in track maintenance machine work.
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