线性模型的基本特征是，模型的未知参数是线性的，同时又线性的包含了随机误差项。
The basic characteristic of the linear model is the unknown parameter of the model is linear and it also includes the linear random error.
线性模型的基本特征是，模型的未知参数是线性的，同时又线性的包含了随机误差项。
The basic characteristic of the linear model is the unknown parameter of the model is linear and it also includes the linear random error.
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