And, of course, you are trying to find somehow the best. That would mean here fitting the best parabola for your data points.
当然,你还是要找到最佳的,这里指对数据点,拟合度最高的抛物线。
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It is pointed out that some researchers 'linear fittingof velocity data is only applied to a particular area or a particular formation while the parabola formulas have wide adaptability.