statistical variation meaning in Chinese

统计上的波动
统计涨落

One of the most important innovations in his analysis was the application of the theory of probability to account for the statistical variation of the agitating forces on bed particles caused by turbulence
在他的分析中其中一个最重要的革新，是应用在紊动流场的搅动力作用于河床粒子时去计算统计上变量的概率理论。
One of the most important innovations in his analysis was the application of the theory of probability to account for the statistical variation of the agitating forces on bed particles caused by turbulence
他著作中的重要革新是使用了概率论，当流沙床面在受到力的作用时，用这个概率论来计算床面颗粒搅动力的统计变化。