截面线

This paper adopts the method of double cubic B-Spline curved surface modeling based on cubic B-Spline curve,and comes out its matrix expression.

自由曲面的数据一般是由各截面型线给出的，数据用离散点组成的列表数据表示，给定型值点的自由曲面型

Heat-resisting wire has larger current-carrying capacity than aluminum conductor steel reinforced with equal section ,and the characteristic of low are length at the same time .

耐热导线具有比同等截面积的钢芯铝绞线载流量高，同时又可以满足低弧垂要求的特点。

Helical rotor is the most important part of rotor flow meter, and its section shape is normally formed by involute and cycloid.

中文摘要：螺旋转子是转子流量仪表中的心脏零部件，其截面形状一般由渐开线和摆线组合而成。

We find that thecontribution to differential cross section related to electron is farlarger than that related to hole, and it varies with differentsemiconductor materials, cylindrical radii and energies of incidentphotos.

结果发现：在自由和受限柱形量子线中，电子对微分截面的贡献要远大于空穴，且贡献随半导体材料、柱形几何半径及入射光能量的变化而不同。

Characteristic of multi-photon nonlinear Compton differential scattering section.

多光子非线Compton 微分散射截面的特性。

Based on mechanism of human sight, the facula diffusion method is advanced to detect individual cross-sections in the image and takes out the contours of them.

在人眼视觉机理的基础上，提出光斑扩散方法，用来探测图像中各个纤维截面并得到其轮廓线。

Using the fluid mechanics theory, the Gauss filtration governing equations are presented based on the incompressible Navier-Stokes equation in primitive variables, which are discretized using standard third-order accurate Galerkin finite element scheme in space and discretized using finite differencing scheme in time.

为了考证数值模拟结果的正确性，对水泥在圆弧弯管中的气力输送气固两相流动采用了等速取样和等截面法进行了三种工况的试验研究。试验结果表明，竖直上升弯管出口颗粒浓度在弯管外侧脊线附近颗粒浓度特别高，其余部分相对比较均匀且浓度较低。

With the algorithm the revolving axis and the generatrix are extracted through point cloud.

通过对轴心线、母截面提取算法的研究，实现了旋转实体模型的生成算法。

The line,at which the tooth intersects the graduated cylinder,is an arc in the developed surface of the cylinder.The tooth profile in the middle section of tooth width is an involute.

它的特点是：轮齿与其分度圆柱面的交线在分度圆柱面所展开的矩形中为圆弧；而且在齿宽中央截面内为渐开线齿形。

The whole ticket hall is a roofing frame system of hyperbolic variable cross-section steel truss and monolayer steel net shell.

整个出发办票大厅为60米跨双曲变截面空间钢桁架和候机指廊，连廊的无拉杆相贯线单层钢网壳的屋面结构体系。

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。