针对换热器的失效分析，考虑几种主要参数的不确定性和随机性，应用蒙特卡罗模拟法抽样计算了服从某种特定分布的随机变量。
Through failure analysis of heat exchangers and in consideration of uncertainty and randomness of several main parameters, the random variables are calculated by Mote-Carlo modeling.
论述了蒙特卡洛方法的数学原理，并结合实例阐述了在天然气储量计算过程中各计算参数实际分布产生随机变量抽样方法。
This paper expounds the mathematical theory of Monte Carlo method, and the random variable sample method of parameters in the calculation process of gas reserves in conjunction with examples.
重权数方法与重抽样方法类似，也是利用计算机的优势通过重复获得大量不同的子样本的重权数估计目标参数的估计量和方差估计量，是一种稳健、通用、有效的方差估计方法。
Replicate weight, which is similar with replicated sample method, gets a lot of replicated weights to obtain the estimators by computer, it is also a robust, common and effective method.
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