1本程序的资料依据文献[1]作为基本素材，并就这三种体长之间的函数关系的比较分析程序作一简要的介绍。2数学处理的方法现有一个N条鱼的样本，其中每条鱼的三种实测长度分别为和，其中的。假设L2和L1之间的函数关系是近似线性的，则它们之间的关系即可表示为：当时，L2的实际 1 The data of the program is based on the literature [1] as a basic material, and a brief introduction of the comparative analysis program of the functional relationship between the three body lengths. 2 Methods of Mathematical Processing There is a sample of N fish, of which the three measured lengths of each fish are respectively, and. Assuming that the functional relationship between L2 and L1 is approximately linear, the relationship between them can be expressed as: At the time, the actual L2