optimum regressive equation 最佳回归方程
quadratic regressive equation 二次回归方程
soil index regressive equation 土壤指数回归方程
the dual linear regressive equation 二元线性回归方程
regressive linear equation 回归直线方程
Predicting from the length of the middle fingers, the regressive equation of it is (?)
从中指长推算环状软骨最小内径的回归方程为（?）
A regressive equation is then given to predict pozzolanic activity index in accordance with ash parameters and cement composition.
本文提出了按粉煤灰理化参数及水泥成分预测抗压强度比的方程。
According to the shape of scatter plot, the authors fitted and optimized regressive equation, and then estimated the forest volume.
根据其散点图形状进行方程拟合及优选，完成蓄积量的估测。
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