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边界曲线

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Deduction of the relationship between the boundary of buffer and Minkovski curve. A concept --- buffer curve --- is concluded from Minkovski curve and provide a way to unify the creation of all types of buffer on the same theoretical base.

12,导出缓冲区的边界和Minkovski曲线之间的关系,并从Minkovski曲线简化归纳出缓冲曲线的概念,将所有的缓冲区,包括单侧,双侧缓冲区的生成都统一建立在缓冲曲线的基础上。

If the first group of curves you select form a closed boundary, the surface will be trimmed to that boundary.

如果你选择的第一组曲线来自一个封闭的边界,生成的曲面将被这个边界修剪。

Its motion domain can be separated as two boundary points or a direction changing point of boundary.

其运动领域可分离为连杆轨迹曲线上的两个边界点或边界转向点。

Some curvilinear grid generation examples show that the proposed adjusting factors ideal grids can be formed for simple connected regions and connected regions with complex boundary. The curvilinear grids near boundaries are orthogonal ...

实例检验表明,该调节因子能够对复杂边界的单连通域或多连通域的水域生成理想的曲线网格,即边界处网格正交,内部网格分布能够适应物理量场的变化情形。

According to the matrix presentation of NURBS curve, ordinary interpolating algorithm on cubic NURBS curve is shown.

根据NURBS曲线的矩阵表示,对常用的三次NURBS曲线进行插值计算,可以了解边界条件和型值点的参数化对插值曲线的影响。

This paper briefly introduces the area calculation problem of a block,the boundary of which includes the easement curve or its parallel curve .

该文论述了以缓和曲线平行线为边界的地块面积的计算特点,推出了缓和曲线或其平行线弓形面积的严密计算公式,讨论了已知缓和曲线平行线弧长或坐标值计算弓形面积的问题,给出了相应的算例。

Using the characteristic of the regular curve boundary for a bending plate in engineering,the analytic integral formulae of assistant states in boundary element method with the linear element for a Kirchhoff circular plate are introduced and the systematic equation of BEM is established in this paper.

利用一般弯曲薄板边界为规则曲线的特点,对工程常用的圆形弯曲薄板,采用线性单元,导出K irchhoff圆板各辅助态的边界积分解析表达式,建立问题的边界元法系统方程,从而使薄板的边界元分析完全避免通常使用的高斯积分,明显提高计算精度。

The mean velocity distributions in turbulent boundary layers of smooth surface and two different riblet surfaces are measured with IFA300 constant-temperature anemometer in low-speed wind tunnel to validate the full development of turbulent boundary laye. Friction velocity and wall friction stress of turbulent boundary layer are obtained with the least-squares fitted curve of the sublayer velocity distribution based on Spalding formula, and virtual origin position of riblet surface can be acquired accurately.

在低速风洞中来流速度一定的情况下使用IFA300恒温热线风速仪测量了光滑表面和两种不同尺寸的脊状表面湍流边界层平均速度分布剖面,并验证了试验段湍流发展的充分性;通过应用Spalding壁面公式使用最小二乘法精准拟合了实验测量的边界层内层速度分布曲线,得到了湍流边界层壁面摩擦速度并进一步求得湍流壁面摩擦应力,较准确地计算出脊状表面的虚拟原点位置,并通过与对数律公式拟合结果比较分析,证实了该方法更加准确有效。

Due to the irregular distribution of space mesh data, the contour of surface cannot be gained from coordinate of points directly. So a method to detect edges of triangular mesh surface is brought out in this passage.

由于空间网格数据分布不规则,不能从点的坐标直接得到曲面的边界,因此提出了一种空间三角网格曲面的边界提取方法,通过判断一个点的邻接点是否都能通过三角网格的边组成闭合曲线来获取边界点。

The complicated cam profile can be expressed by one continuous function while not postulating the types of cam curves in advance.

将复杂的凸轮曲线用一个连续函数表示,而不必事先假定凸轮曲线的类型,并可通过适当调整三次样条函数的系数Cj 改善曲线形状以适应额外的内点和边界条件。

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However, as the name(read-only memory)implies, CD disks cannot be written onorchanged in any way.

然而,正如其名字所指出的那样,CD盘不能写,也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口,替代木托盘,免薰蒸,符合欧盟、北美各国对出口货物包装材料的法令要求;喷涂钢托盘适用于重载上货架之用,托盘表面根据需要制作成平板状、波纹状及间隔形式,满足不同的使用要求。

A single payment file can be uploaded from an ERP system to effect all pan-China RMB payments and overseas payments in all currencies.

付款指令文件可从您的 ERP 系统上传到我们的电子银行系统来只是国内及对海外各种币种付款。