And this part is a parabola and this parabola here is horizontal.
这部分是条抛物线，抛物线这边是水平的。
It's a second-order equation in x, and is a parabola and a parabola has this shape.
这是一个x的二次方程，也是一个抛物线方程式,抛物线都长这样。
Also, the fitting formula of piecewise parabola interpolation is derived. The error evaluation based on ISO is accomplished for both experiential formula and parabola fitting formula.
导出了分段抛物线插值拟合公式，并对经验公式和抛物线拟合公式均以iso为基准进行了误差评估。
Also, the fitting formula of piecewise parabola interpolation is derived. The error evaluation based on ISO is accomplished for both experiential formula and parabola fitting formula.
导出了分段抛物线插值拟合公式，并对经验公式和抛物线拟合公式均以iso为基准进行了误差评估。
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