计算机辅助

We propose a closed surface parametrization method based on a new theory of curves and surfaces.

曲线曲面是计算机图形学和计算机辅助几何设计中的基本研究对象。

The use of computers in education is referred to as computer-assisted instruction.

在教育中使用计算机被称为计算机辅助教学。

Computer-assisted test is the use of computer help product testing, test automation to achieve and improve testing accuracy.

计算机辅助测试是利用计算机帮助进行产品测试，实现测试的自动化，提高测试准确性。

We propose a unified method to approximate important geometric attributes, including normal vector, gauss curvature, mean curvature, principal curvatures and principal directions on point sampled surface. Based on MLS projection our method is robust to noise and stable to the sampling density.

曲面的微分性质包括法向量和切平面、高斯曲率、平均曲率、主曲率和主方向，在计算机图形学、机器视觉和计算机辅助设计等领域发挥了重要的作用，比如曲面绘制、内外测试、曲面重建、曲面简化、去除曲面噪声和模型分割等。

Aimed at realize computer aided conceptual design process, on the basis of the principle of decomposition and combination which has feature of zigzagging decomposition, advice a conceptual design process model which is computer oriented, which formulate the generation, evaluation and selection of design concept.

在对AI技术研究现状进行分析的基础上，认为AI智能并不能完全替代人脑，因而对概念设计中的智能采用人机集成的方法，并提出了本研究的基本准则：对概念设计的计算机支持不是追求完全无人的自动化，而是建立一个计算机辅助的设计环境。

The marker system in computer aid design is the hotspot and difficult problem in the study of CAD.

文摘要 ：计算机辅助设计技术是计算机科学与工程科学技术之间的跨学科的边缘科学。

Design method of farm machine products drop behind the one of manufactured products. To make our countrys design and manufacturing technology of dead stock to achieve the standard of developed country, to develop parallel with other machine manufacture, this article introduce CAD, optimization design, computer simulation technique into the design of the ditcher, to make its design more reasonable, much higher quality to bring social benefit, economic benefit, ecological significance.

我国农业机械产品的设计方法相对工业产品来说比较落后，为了使我国农机设计制造技术达到发达国家水平，与其它机械制造业平行发展，本文将计算机辅助设计、优化设计、计算机模拟技术引用到该机具的设计中，使该机具的设计更合理、更高质，使它尽快地产生社会效益、经济效益、生态效益。

The computer aided Monte Carlo analysis is applied to it to achieve the influence of the circuit output voltage, which caused by random error of the electronic component.

建立一种功率因数校正电路的计算机模型，并对该模型进行了计算机辅助的蒙特卡罗分析，得到了电路中元器件参数的随机误差对电路输出电压的影响，为电路生产过程中确定元器件的误差范围提供了科学依据。

In the last part of the paper, we construct a family of 2 parameter cubic algebraic curves interpolating two given endpoints and two given tangent lines and two given curvatures at these two endpoints with different initial cases in detail.

引 言三次参数曲线在计算机辅助几何设计与计算机图形学领域一直扮演着十分重要的角色，这主要是由于三次参数曲线是具有奇异性的次数最低的曲线，这些奇异性包括尖点、拐点和闭圈。

With the rapidly development of the computer technology,computer-aided design has been applied widely in foundry technique.

随着计算机技术的快速发展，计算机辅助设计技术在铸造工艺设计中得到了愈来愈广的应用。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。