If there appears to be a linear relationship test results should be established by appropriate statistical methods (e. g. by calculation of a regression line by the method of least squares).

如果其呈现线性关系，测试结果应该通过适当的统计学方法(例如，以最小二乘方来计算回归线)来确立。

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The best regression models (e. g. Ulmus pumila) of leaf content against air SO2 and leaf stomatic resistance could explain that the sulfur acted as pollutant entered plant mainly through stoma.

植物叶片硫含量与大气SO2和气孔阻力的回归模型说明，以污染状态进入植物体的硫，主要通过气孔进入；

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The features of two methods, i. e. least square support vector machine (LSSVM) and generalized regression neural network (GRNN) are compared and analyzed.

比较分析了最小二乘支持向量机（LSSVM）和广义回归神经网络（GRNN）这两种方法的特点。

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