1) Circle Group
样圆群
1.
Approaching the Circle Group Investigation Method of the Tending Thinning Stands;
抚育间伐林分样圆群调查法的探讨
2) sample circle
样圆
1.
Results show that: 1) the number of individual trees differs in sample circles with the same spacing and different coordinates,with an evident variation.
为了满足当前人工林生产中林分调查的需要,采用计算机模拟的方法,从理论上研究了不同圆心点位对人工林造林密度样圆调查误差的影响。
3) sampling of smallroundplot
小样圆抽样
4) arc spline
圆弧样条
1.
A new curvature-based algorithm in free-form curve fitting was proposed to fit a 2D NURBS profile with an arc spline,where a new form of curvature formula with matrix representation was also proposed,and then the arc spline tool path with G~(1) continuity was generated.
给出了一种平面曲线轮廓的圆弧样条拟合及刀具路径生成算法,该算法面向零件轮廓的光顺性刀具路径生成,通过应用曲线的曲率关系,对以NURBS表示的被拟合自由曲线按参数递增的方向用G1连续的圆弧或直线段逐段拟合,并生成相应的圆弧样条刀具路径,从而实现零件曲线轮廓表面的光顺加工。
2.
An algorithm for data approximation with global optimal biarc spline is presented in this article.
提出了用整体最优双圆弧样条拟合离散数据点的算法。
3.
This paper presents a new spline──arc spline.
本文介绍了一种新的样条曲线──圆弧样条，在解求其平行线时可能发生的＂小弧＂现象，需专门程序处理。
5) Circular-arc spline
圆弧样条
1.
Building on mathematical theories of calculation geometric and function approaching method, circular-arc spline fitting and biarc fitting are gived for tabulated curve, circular-arc spline fitting is invariant in geometry , it is simple and accurate than other kinds of spline curve in calculation.
文章从计算几何、函数逼近论等数学理论出发,对列表曲线进行了圆弧样条拟合和双圆弧拟合。
2.
Based on the fitting programming for non- round curve and tabulated curve and the application of numerical control processing,circular-arc spline function fitting and biarc fitting are effective ways of solving the problem of non- round curve fitting and tabulated curve fitting.
在对非圆曲线和列表曲线拟合编程及应用于数控加工实践的基础上,提出了圆弧样条函数拟合和双圆弧拟合是解决非圆曲线和列表曲线拟合的有效途径。
6) spherically iotropic
圆球土样
1.
The paper uses the primary theory of Biot consolidation and spherically isotropic elastic mechanics,and gets the Biot consolidation model of a spherically iotropic soil sample.
利用B iot固结的基本理论和球面各向同性弹性力学的一般理论,建立了球面各向同性圆球土样B iot固结问题的数学模型,在此基础上,应用Fourier,Laplace,及Hankel变换等数理方法求出其解析解;也可应用数值分析的方法进行编程计算。
补充资料：陪群公登箕山赋得群字
【诗文】：
许由去已远，冥莫见幽坟。世薄人不贵，兹山唯白云。
宁知三千岁，复有尧为君。时佐激颓俗，登箕挹清芬。
高节虽旦暮，邈与洪崖群。
【注释】：
【出处】：
全唐诗：卷882-9
许由去已远，冥莫见幽坟。世薄人不贵，兹山唯白云。
宁知三千岁，复有尧为君。时佐激颓俗，登箕挹清芬。
高节虽旦暮，邈与洪崖群。
【注释】：
【出处】：
全唐诗：卷882-9
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条