用一个重正化函数F z F bz /a 作为支气管结构第z 个层次 的半径则参数b 表征了对半径变化有贡献的标度区间的测度而a 表 示某个特征标度的权重-with an emphasis of function F is F bz z / bronchial structure as a first level of z radius parameter b is characterized by changes in the radius can contribute to the s

实体的B-rep表示模型是一非常复杂的模型，要求能够表达出多面体各几何元素之间完整的几何和拓扑关系，并且允许对这种几何和拓扑关系进行修改.在B-rep表示中，体、面、边和顶点是最基本的几何元素，在实体的拼合、显示、分析计算或人机交互过程中-The B-rep solid representation model is a very complex model, requires the ability to express the polyhedron between the geometric

这是我根据资料编写的bspline b样条测试程序，代码中只保留了bspline相关的代码，内含编译好的可执行文件，初学者一看就懂-this is a bspline test program, and it s very easy to understand because most parts of program is the bspline parts

均匀三次B样条曲线插值，给定若干点求出曲线(Uniform three times B spline curve interpolation, given a number of points to find the curve)