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１ 前 言化合物的组成与其性能之间既存在着线性关系，也存在着非线性关系。对于线性关系的问题，运用数理统计中的一元回归或多元回归分析等方法便能解决，但是非线性问题的处理要比线性关系复杂得多。对于简单的非线性问题，可以通过适当的数学变换，将非线性问题转化为线
1 Introduction There are both linear and nonlinear relationships between the composition of a compound and its properties. For the problem of linear relationship, the use of mathematical statistics, such as one yuan regression or multiple regression analysis and other methods can be solved, but the nonlinear problem is much more complex than the linear relationship. For simple nonlinear problems, nonlinear problems can be transformed into lines by appropriate mathematical transformation