预测块茎发生量的线性回归方程式：（?）
The equation of linear regression for predicting its tuber is: (?)
插管长度与前正中线相关回归方程式为：肠系膜上动脉（?）
The regression formulae to estimate the length of catheter were calculated from the anterior median line by means of regression analysis.
文中提出了热值与含水率和热值损失率与含水率两个线性回归方程式；
Two linear regression equations between wood moisture and both calorific value and fuel loss were developed.
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