三维

This paper proposed a two-dimensional orthogonal projection similarity-based 3D model retrieval system.

提出了一种基于二维正交投影图像的三维模型相似性比较算法。

The material job and main conclusion are as follows:(1) A simple boundary orthogonalization procedure independence grids generation method is put forward on the base of algebraic grid generation method; Data structure and computational model on interface are established aiming at blocks of structured grids.

本文针对粘流场数值模拟技术的研究现状和发展动态作了比较全面的回顾与展望，重点研究了网格生成技术、数值求解技术、湍流模型技术和动边界模拟技术，在此基础上建立了模拟自由面湍流场的数学模型，并成功地应用到二维溢流坝和带闸墩的三维溢流坝过坝水流的数值计算。

On the basic of above job a mathematical model of simulation turbulent flow with free surface is established and triumphantly applied to numerical computation on 2D spillway and 3D spillway with frusta of brake.The material job and main conclusion are as follows:(1)A simple boundary orthogonalization procedure independence grids generation method is put forward on the base of algebraic grid generation method; Data structure and computational model on interface are established aiming at blocks of structured grids.

本文针对粘流场数值模拟技术的研究现状和发展动态作了比较全面的回顾与展望，重点研究了网格生成技术、数值求解技术、湍流模型技术和动边界模拟技术，在此基础上建立了模拟自由面湍流场的数学模型，并成功地应用到二维溢流坝和带闸墩的三维溢流坝过坝水流的数值计算。

The extended two-dimensional outer boundary of a three-dimensional object.

正方形是二维的，而正六面体则是三维的。

The extended two-dimensional outer boundary of ''.

三维物体外层的扩展的二维的界限。

We also present the test result of impulse response with the overthrust model.

继而，对岩丘模型，文中讨论了成像参数的选择、地震子波对成像精度的影响、并完成二维及三维叠前深度偏移的比较；对推覆体模型，文中进行了脉冲响应测试。

Because this equation has the character of parabolic type in mathematics, it could provide a very accurate and powerful tool for computing fluid mechanics and heat transfer characteristics in micro-tubes after fully developed region.

我们为了方便计算程式的求解过程，将三维的圆形微管流简化为二维轴对称x-r方向的平面流场，并求解边界层方程式。

Against the practice, the weaknesses found in the product, they will three-dimensional simulation model for transformation by parallel projection, superimposed on the digital true color aerial orthophotos, the implementation of the digital side-view maps (commonly known as 2.5-D maps) production.

针对实践中发现该产品的弱点，他们将三维仿真模型按平行投影变换后，叠加在航摄数字真彩色正射影像上，实施了数字侧视地图（俗称2.5维地图）制作。

The percentage error of the measurement on surface reconstruction image was related to the lesions dimensions.

测量关节软骨病变大小在1mm扫描层厚的SSD三维重建图像上较二维磁共振图像更为准确（P〈0.05）。

The present study focuses on how the expertise affects 2D pattern recognition based on both behavioral experiments and fMRI. The possibility of configural process as a general rule in visual pattern recognition for perceptional experts was also discussed.

本文从行为和脑功能两方面考察了专家化训练对一种特殊的二维模式—字符识别的影响，探讨了以往研究中揭示的视知觉三维物体识别的专家技能作为视知觉中普遍适用的认知规律的可能性，这种专家技能指的是专家对专长领域内物体的视觉信息的组织倚重整体性结构编码。

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。