曲面

In this paper,we discussed the geodesic path on the torus vessel in filament winding technique.

通过讨论环形曲面上的测地线，对环形气瓶纤维缠绕规律和线型进行了分析，对于缠绕成型工艺的开发、推广与应用有着现实的意义。

A: The geodesic is the curved surface the shortest distance between two points on any curve, its ...

答：测地线是指空间曲面上任意二点间距最短的曲线，其。。。

One of key research issues in Reverse Engineering is the geometric modeling of complex surface. Extracting boundary of complex surface from ",points cloud", is a main step.

复杂曲面零件表面的几何模型构造是反求工程的研究重点之一，根据零件表面的数字化数据提取零件表面的边界是构造零件几何模型的关键步骤。

Surface reconstruction, aiming to achieve the mathematical expression of geometric model for complex free-form surface from the scattered measured data, is a key technique of Reverse Engineering.

曲面重构，是指从散乱数据点集重构出物体的几何模型，并获得该几何模型的数学表达式，它是逆向工程研究中的关键内容。

For the first time the surface reflectors are designed using a combination of vector diffraction theory and geometric optics.

首次采用几何光学与矢量绕射理论相结合的方法设计出的反射曲面，较大地提高了准光模式转换效率，并使输出波束质量大为改进。

Because of rigorous theory is lack, method that metal plastic stream is supposed through geometric proportion condensation, makes that cell quantity of the partition complex special-shaped product and disperse dots of die surface are many, reduce regression precision of streamline die design, sometimes can't be built mathematics module and its optimization.

由于缺乏严密的理论支持，仍假设金属流动按等比压缩方式研究，致使复杂拔挤异型材划分等比率单元过细及描述模腔曲面的离散点过多，降低了流线模设计的回归精度，甚至无法建立模腔数学模型及其优化。

Therefore the following research works have been done in the dissertation: To put forward a unified surface-solid geometric model and its topological representation which can represent surface model and solid model in an integrated data environment.

该模型可以将曲面模型与实体模型表示在一个统一的数据环境中，从而达到了拓宽几何造型系统的形体定义范围和造型覆盖域的目的。

Based on geometrical nonlinear finite element theory, a curved quadrilateral isoperimetric element with 8 nodes for initial form analysis of tensile membrane structures is presented.

根据几何非线性有限元理论，提出张力膜结构初始形态分析的8结点曲面四边形等参单元。

Based on the geometrical nonlinear finite element theory, a curved quadrilateral isoperimetric element with 8 nodes for initial form analysis of tensile membrane structures is presented.

本文根据几何非线性有限元理论，提出张力膜结构初始形态分析的8结点曲面四边形等参单元。

Trademarks for goods such as unification of "Wonder Wonder" oil acrylic plastic for objects to maintain, access and and two-sided seal, such as viscose, Release Paper Glassine Release Paper for the slim high intensity, Flower of the computer, PE, PP, metal surface has good adhesion, surface adhesion, and low temperature resistant and has ...

等品统一商标为"Wonder万得"亚克力油胶，用于物体保持，接和及封缄等双面粘胶，离型纸为格拉辛离型纸，薄型强度高，对电脑花，PE，PP，金属表面有很好的粘著力，曲面附着力强，耐低温及。。。

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。