汽蚀曲线绘制方法有传统的有手工绘法、多项式拟合法、非线性拟合法、三次样条插值法等。
Cavitation curve drawing method of the traditional hand-drawn method, polynomial fitting, non-linear fitting, cubic spline interpolation method.
本文采用三次多项式插值和曲线拟合相结合的方法可简单有效地提取出在线掌纹的线特征。
In this dissertation, a line extraction method based on cubic polynomial interpolation and minimum mean square error fitting are proposed, which can effectively extract lines out.
推导了三次多项式插值公式和三次多项式插值余项，绘制了发动机万有特性曲线。
The formulation of cubic polynomial interpolation and the remainder of cubic polynomial interpolation were deduced and the engine fuel consumption characteristics map was drawn by this method.
因为，两点只能决定一条直线，而在两点间的曲线可用无限多的三次多项式近似。因此，为使结果具有唯一性。
Because only two points a straight decisions, and in between the two curves can be used an infinite number of cubic polynomial approximation.
因为，两点只能决定一条直线，而在两点间的曲线可用无限多的三次多项式近似。因此，为使结果具有唯一性。
Because only two points a straight decisions, and in between the two curves can be used an infinite number of cubic polynomial approximation.
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