Dong用三维建模程序打造他的概念车，不过学生们通常也制作等大模型。
Tran rendered his concept car using 3-D modeling programs, but students often build scale prototypes as well.
利用线性系统理论和采样理论对成像系统的传递函数进行了分析建模；借助于三维噪声模型表征了系统的噪声特性。
The transfer function of imaging system is modeled using the linear system theory and sampling theory, and the noise is characterized with the three-dimensional noise model.
并结合参数化驱动技术实现网络化三维建模，并基于CATIA平台给出了验证模型。
Then networked three dimensional modeling will be realized by parameter drive , and a proved model based on CATIA was provided .
重点研究了AMDB数据绘图映射和建模方法、机场三维模型与地形的合成显示技术。
The AMDB mapping and modeling method, the synthesis display technology of airport 3D model and terrain were studied emphatically.
本文对井喷事故发生地实际复杂地形地表的三维模型的建模方法的进行了探讨。
This paper blowout accident occurred in the actual surface of the complex terrain of the three-dimensional model of the modeling methods were discussed.
理论计算结果表明，利用这种参数化建模方法完成的PD C钻头三维布齿模型是精确、可靠的。
The theoretical calculation result indicates that the three-dimensional tooth arrangement model of PDC Bit's with the parameter method is precise and reliable.
根据几何构造模型能够准确表达植物根系形态结构的特点，提出了一种植物根系三维建模方法。
According to the characteristics of geometrical modeling which can describe exactly the structural features of plant root systems, a method about modeling of plant root systems is proposed.
首先对直升机外形三维建模，编写接口程序导出模型数据。
First, build a three-dimensional model of a helicopter, then compile interface program in order to get the data of the model.
特征技术是三维几何建模领域中继实体模型技术后的又一个重要里程碑。
Features 3d geometric modeling technology is the area of solid model relay technology is another important milestone.
三维建模技术，包括3D分析接触气瓶，卷曲，球囊扩张和血管压缩载荷模型。
The 3D modeling technique consists of 3D analytical contact cylinders to model the crimping, balloon expansion, and the vessel compressive loading.
介绍了逆向工程的基本概念，基于RE技术上的三维建模方法：数据采集、点云数据处理、三维模型重建。
Introduces the basic conception of the reverse engineering and three-dimensional modeling method based re technology: data gathering, cloud data processing and three-dimensional model rebuilding.
复杂三维模型的建立、建模工具的灵活使用、三维动画设计方法、多任务控制面板的设计以及计算机考试模块的设计。
It mainly includes building a complex three-dimension model, use of modeling tools, methods of three-dimension movie design, design of multi-task controlling panel and computer testing modules.
采用了地性特征点和地性线参与三维建模的方法，提高了数字高程模型DEM的地形逼真度。
Terrain fidelity of digital elevation model (DEM) can be enhanced by integrating terrain character points and terrain lines in the three dimensional model.
洪水演进仿真环境的绘制包括三维地形建模和地形地貌实时绘制，源发型洪水演进动态仿真技术的关键是流域河道边界自搜索模型的建立。
The key technology of the dynamic simulate of the original flood evolvement is the design of the self-control search model of the boundary of the watercourses drainage area.
该快速建模插件能减少设计人员反复基础建模的重复劳动，快速输出展柜三维模型，大幅度提高设计人员的工作效率。
The fast-modeling plug-in can reduce the duplication of basic modeling for designers, output showcase three-dimensional model in very short time, greatly improve the efficiency of the designer's work.
目前三维地层表面建模方法构建的三维地层模型上表面粗糙，与地形不一致。
Three dimensional strata model, constructed by the published modeling approaches, is inconsistent to the terrain.
接着介绍了城市三维模型建模原理，针对目前城市建模中存在的问题，提出了混合使用建模技术的方法。
Then the basic principle of city modeling has been introduced, and due to some existing problems, the method of mixed modeling technology is given.
提出了摩托车关键零部件的参数化建模方法，并建立了车架的三维参数化模型，为实现摩托车关重零部件数字模型的重用奠定了基础。
Bring forward the method of parameter feature modeling of key parts of motorcycle and established the parameter frame of motorcycle. This work is the basis CAD model reusing.
这其中包括针对典型三维特殊效果进行粒子系统建模，对特殊效果库进行结构设计，以及对三维特殊效果模型的封装、存储和管理等过程。
It includes modeling of typical special effects based on particle system, designing the structure of special effects model base, encapsulating, depositing and managing models, and so on.
结果获得三维自回归趋势面模型及其建模方法。
Results the tri dimensional auto regression trend surface model and the method to build this model were obtained.
与传统的几何建模技术不同，基于图像的建模技术采用的策略是由光学系统对原始场景模型进行扫描，然后自动恢复出场景的三维模型。
Different from the traditional geometric modeling technology, the image based modeling technology get raw data from the original scene with cameras or other kind of optical instruments.
改变以往建立有限元模型时采用的二维建模方法，根据塔机实际结构建立三维空间桁架模型；
Instead of tow-dimensional finite element mode, three-dimensional mode in truss structure is established based on the actual structure.
其次，在几何建模方面，利用CT切片对喉部的声带等主要组织进行三维重构，形成真实的三维模型。
Secondly, for geometrical modeling, a three-dimensional model of main tissue such as vocal of throat is set up using 3d reconstruct from ct segments.
将三维扫描仪测量得到的点云转换成一个实际的3D（三维）多边形模型，以满足高级建模和可视化的需要。 为此提到了转换过程中出现的所有问题和解决方法。
We addressed the problems and solutions of converting a measured point cloud into a realistic 3D polygonal model that can satisfy high modelling and visualization demands.
利用UG三维CAD软件对汽车保险杠进行了三维建模，并转换到Dynafor中建立了该零件的有限元分析模型。
The three-dimension model is set up for auto-bumper by the UG three-dimension CAD software, and the model is translated into the DYNAFORM for building its FEM model.
研究了三维动态实体模型建模技术和数字开采设计技术，实现了数字开采软件平台。
The study also touches upon the modeling technology of tridimensional dynamic entity and design technology of digital exploration, which provides software platform for the digital exploration.
研究了桩-土-框架结构相互作用体系进行有限元建模的基本问题并建立了三维桩-土-框架结构模型。
To research the basic problem on pile-soil-frame structure interaction system went on finite element making model.
介绍了数字城市的框架体系和三维城市模型的建模过程，探讨了城市建筑物的CSG建模方法。
This paper introduces the frame system of digital city and the process of 3d city model, discusses CSG model method of buildings.
介绍了数字城市的框架体系和三维城市模型的建模过程，探讨了城市建筑物的CSG建模方法。
This paper introduces the frame system of digital city and the process of 3d city model, discusses CSG model method of buildings.
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