Through the analysis of the above figure, it is found that the phenomenon of lag point exists in the autocorrelation coefficient and partial autocorrelation coefficient of the monitoring data after the fourth order difference calculation, which has been significantly improved.<br>
正在翻译中..
![](//wwwimg.woaifanyi.com/pic/loading_3.gif?v=b9814dd30c1d7c59_8619)