调用CFTOOL工具箱进行实验数据拟合，首先给定实验输入和测得的实验结果，然后调用该工具箱，就可以进行曲线拟合了-Toolbox CFTOOL call for fitting the experimental data, first of all, given the experimental input and the measured results, and then call the toolbox, we can carry out curve fitting of the