1. a smooth curve fitted to the set of paired data in regression analysis; for linear regression the curve is a straight line. 
   在回归分解中相对于一批对数的光滑曲线；对线性回归来说曲线是直线。
2. the relation between variables when the regression equation is linear: e.g., y = ax + b. 
   回归方程为线性时变量之间的关系；例如：y=axb。
3. when the regression line is linear (y = ax + b) the regression coefficient is the constant (a) that represents the rate of change of one variable (y) as a function of changes in the other (x); it is the slope of the regression line. 
   线性回归分析中计算出来的回归线的常数和自变量的系数。
4. linear elastic fracture mechanics 
   线弹性断裂力学
5. linear least squares estimate 
   线性最小二乘估计

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• 1. 一般线性回归模型
  general linear regression model 一般线性回归模型...general linear transformation 一般线性变换
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