程序利用函数UF_MODL_ask_exps_of_feature获得特征参数，用函数UF_MODL_edit_exp修改参数，用函数UF_MODL_update更新参数。-The program uses the function UF_MODL_ask_exps_of_feature to obtain characteristic parameters function UF_MODL_edit_exp modify the parameters to update the parameters of the function UF_MODL_update.