说明：  包括指数、对数、幂指数、双曲线、Logistic、多项式、Gamma等模型的非线性拟合，每行代码均有中文注释便于理解
(Including the nonlinear fitting of exponential, logarithmic, power exponential, hyperbola, logistic, polynomial, gamma and other models. Each line of code has Chinese annotation for easy understanding)