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本文证明了含ｎ个时间常数的腐蚀电极系统在恒电位阶跃暂态电流过程中任意相邻的ｎ＋１个数据点满足多元线性方程．通过对该方程的多元线性回归分析，可方便地算出暂态过程的电化学参数，判定出未知体系所含时间常数的个数．
In this paper, it is proved that any adjacent n + 1 data points in a corrosion electrode system with n time constants satisfy the multivariate linear equation in the potentiostatic step transient current. Through the multiple linear regression analysis of the equation, the electrochemical parameters of the transient process can be easily calculated to determine the number of time constants contained in the unknown system.