3对于许多随机变量来说，一个好的选择是正态分布，常常表现为一个钟型曲线，如图1所示。
3 For many random variables, a good choice is the normal distribution, often represented as a bell-shaped curve, shown in Figure 1.
对于残缺的样本观测数据，讨论了正态分布总体尺度参数的区间估计问题。
A question of formation confidence interval for scale parameter of normal distribution from incomplete observational data is discussed.
在机车智能故障诊断系统中的应用表明，该方法对于那些测量结果属于正态分布的参数故障阈值的设定具有指导意义。
The applications to intelligent locomotive fault diagnosis system show that the method could act as a guideline for the determination of threshold with positive distribution of fault parameters.
应用推荐