It also tends to be linear: too often forecasters merely project forward recent trends.
而且预测也通常都是线性的：很多时候，预测人只不过是突出了最近的趋势而已。
The signal estimation precision of the linear model is an important index in applied project.
线性模型的信号估计精度是工程应用上非常重要的指标。
The signal estimation precision of the linear model is an important index in applied project.
线性模型的信号估计精度是工程应用上非常重要的指标。
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