三次曲线

A new method for planar curves has been developed. Curvature signal is decomposed with wavelet at first, and then select interpolative dots by altering pace, which is used to construct a G2 continuous rational cubic Bezier spline curve.

给出了一种先对初始曲率进行小波分解，再用变步长的方法选取待插值点，最后利用C^2连续的三次有理Bezier样条插值重建出光顺的平面曲线的方法。

With regard to the accuracy and smoothness of a set of discrete data points approximation, this paper gave a whole fairing and approximation algorithm of cubic Non-Uniform Rational B-Spline curve.

针对离散数据点序列的拟和精度及光顺度问题，提出了一种三次非均匀有理B样条曲线整体光顺逼近算法。

Arithmetics and implements of function modules are indicated as follows:In the modeling module, the twist ruled surface formed blade is constructed using B-spline interpolation technique.

造型模块中，采用三次B样条插值的技术，构造出叶片盖盘与轴盘曲线，建立了扭曲直纹面形式的叶片型面。

In the fitting of the actual operation, using Matlab graphics software and the use of least squares spline interpolation function is more convenient and have good results in the means.

在拟合曲线的实际操作中，借助Matlab绘图软件使用最小二乘法和三次样条插值函数是较为方便且有良好效果的手段。

Data used to be and curve tools, the use of a cubic spline interpolation methods.

用数据拟和曲线的工具，利用了三次样条插值等方法。

Using VB drawing three parameters spline interpolation curve, very good looking, easy!

采用VB绘制三次参数样条插值曲线，非常好看，方便！

Using VB drawing three parameters spline interpolation curve, very good loo...

采用VB绘制三次参数样条插值曲线，非常好看，方便！

A method of generating cubic spline curves with local shape parameters is presented in this paper.

给出了带局部形状参数的三次样条曲线生成方法。

Triple NURBS curve was renewed with number of k-1=2 boundary conditions, under this circumstances, tangent vector procedure was selected in AutoCAD.

采用的三次NURBS曲线需补充k-1=2个边界条件，AutoCAD用的是矢切条件。

The influences of different kinds of conducting materials and their contents and different volume of PVC grain on the electrical property,mechanical properties and terrazzo lines of the floor were studied.

采用特殊成型方法，研制类似网络结构的水磨石形式的抗静电地板，研究了多种导电材料及其不同用量对网络地板导电性能、力学性能和地板纹路的影响；研究了PVC颗粒大小对地板的导电性能、力学性能和地板纹路的影响；对体积电阻率曲线用三次方程进行了拟合，得到体积电阻率与含量的函数关系，并发现其具有很好的相关性。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。