A teaching aim is the starting point and regressing point of class teaching.
教学目标是课堂教学的出发点和回归点。
A reasonable empirical equation is also obtained by regressing the experimental data.
由试验结果的拟合，得到了一个与试验数据比较符合的经验公式。
A reasonable empirical equation is also obtained by regressing the experimental data.
由试验结果的拟合，得到了一个与试验数据比较符合的经验公式。
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