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代码说明：

说明：  1.同时对多个光谱数据进行一阶导数计算，并保存在元胞数组中。2.对光谱数据进行取均值，每三个列为一组。(At the same time, the first derivative of multi-spectral data is calculated and stored in the cell array.The spectral data are averaged and divided into three groups.)

文件列表：

derivative1.m, 1335 , 2019-07-05
dataPreprocess2.m, 1769 , 2019-07-04