The use of cubic spline interpolation function method can only solve the processing problem of nomographs consisting of one familycurves.
指出用三次样条插值函数法只能解决由一组曲线族组成的图表处理问题。
2
According to the equation of asymptotic curves, a family of nonlinear asymptotic curves are given to the principal normal surface.
根据渐近曲线的方程，具体给出主法线曲面的一族非直线的渐近曲线。
3
This paper discussed an elementary solution to the envelope of a kind of family of curves of which the equation was one of the cubic equations in regard to a parameter.