对于多元正态随机变量二次型的独立性的证明，最重要的是证明一个引理。
It is very important to prove a lemma for the proof of the independence between two quadratic forms of multivariate normal variables.
假定网架结构制作偏差近似服从正态随机分布，利用舍选法实现了正态随机变量的抽样。
The manufacturing deviation of grids structures was assumed to be in normal distribution, and the normal random sampling was realized by acceptance-rejection method.
本文推导了两个正态随机变量商的分布，并着重讨论了它在环境因子分析中的应用，给出了实例。
In this paper, the distribution of quotient of normal variable was derived, its application in analysis of environment factors was emphatically discussed, and an example was given.
根据中心极限定理，以随机数为基础，设计了正态随机变量的结构公式，其数学期望和方差可任意给定。
On the basis of random numbers, The structure-formula of the normal random variable has been designed according to the limit theorem.
本文讨论了强平稳LPQD随机变量列更新过程的渐近正态性问题。
This paper discusses the asymptotical normality of the renewal process generated by strictly stationary LPQD random variables.
本文讨论了强平稳LPQD随机变量列更新过程的渐近正态性问题。
This paper discusses the asymptotical normality of the renewal process generated by strictly stationary LPQD random variables.
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