三维

Three-dimensional CT reconstruction and computer simulation can show more details of mandible structures, and provid reliable preoperative planning, it is more effective method than two-dimensional X-ray photography for Mandibular Angle Reduction

术前三维CT重建可以更全面、更客观地了解患者下颌骨个体化解剖结构的细节；计算机模拟技术能够提供数字化的手术方案；三维模拟与术后图像的比较是对手术效果最直接的评价。

An approach to visualizing the 3D electromagnetic environment is presented by the multi layer of Marching Tetrahedra isosurfaces.

电磁环境三维可视化是目前虚拟战场环境中亟待解决的问题之一，提出多层等值面的方法来表现三维电磁环境。

An approach to visualizing the 3D electromagnetic environment is presented by the multilayer of Marching Tetrahedra isosurfaces.

电磁环境三维可视化是目前虚拟战场环境中亟待解决的问题之一，提出多层等值面的方法来表现三维电磁环境。

This invention relates to three-dimensional seismic data processing quality monitoring technology. Selecting time-window and analysis frequency for FFT to obtain frequency-domain conversion result for every channel; taking mean-filter to obtain the statistic excited energy or noise disturbance; plotting all results on plane graph to monitor the 3D excited energy or noise disturbance; taking normalization and autocorrelation to all earthquake channel; summating all autocorrelation statistic result to obtain opposite statistic autocorrelation result; finding out and plotting the zero-crossing of autocorrelation on plane position for monitoring excited wavelet.

本发明涉及一种三维地震资料处理质量监控技术，步骤是：选定时窗和分析频率；对某炮各地震道在时窗内做快速富立叶变换，得到道数据在频率域变换结果；对同炮的所有地震道做频率域中值滤波，得到该炮的统计激发能量或噪声干扰量结果；将所有炮的计算结果绘到各炮点平面图上，监控三维激发能量或噪声干扰；对地震数据某炮的各地震道做归一化自相关；对同炮的所有地震道的自相关统计求和，得到该炮的统计自相关结果；寻找该炮统计自相关的零交叉时，将所有炮的零交叉时绘到各炮点平面位置上，完成激发子波监控。

Instead of computely redacting the real world as a Virtual Reality system does, the user can see computer-generated 3D model superimposed on the real world with an Augmented Reality system.

为了提高增强现实系统三维注册的精度和效率，提出了一种基于计算机视觉的增强现实三维注册算法，并已将其用于采用透射式头盔显示器的增强现实系统中。

Three-dimensional (3D) structures of CNTs were firstly synthesized, including pillar-shaped arrays, a ring-like castle and a crucian carp without a tail and fins made of nanotubes.

首次制备了三维碳纳米管阵列，如三维柱状结构、类似环形城堡状和鱼形的图案。

The main technique and the functions of coextrusion die design CAD system were studied, and two-layer pipe coextrusion die design CAD system was founded. The system can execute polymer coextrusion die designing and modeling according to the product\'s information, give the three-dimension assembly structure and engineering drawing.

该系统可以在人机交互状态下进行工艺分析与三维模具设计，选择模具中各零件的结构，系统自动完成工艺参数和主要模具结构参数的计算，最后生成模具的三维造型和工程图。

A detailed three-dimensional solid model of the piston is established by means of Ansys 11.0 Workbench Environment, which is issued in March 2007. Using the third thermal boundary conditions, analysis of the three-dimensional piston, including temperature, displacement and thermal stress field are performed by means of thermal-structural coupling. Structural optimization is also accomplished and a new piston has been designed, which performance is getting improved.

本文在2007年3月发布的Ansys 11.0协同仿真环境中建立了详细的活塞三维实体模型，运用第三类热边界条件，结合热耦合分析方法完成了活塞的三维温度场，位移场及热应力场的仿真，在此基础上对活塞的结构优化进行了探索，并设计出一款性能得以改善的活塞，实现了真正意义上的仿真驱动产品设计。

A 3D geological visualized model is prepared based on control point data, drill hole data and orientation data of discrete engineering as measured, which is able to conduct 3D visualized analysis closely related to a given project.

根据实测的离散工程控制点数据、钻孔数据和产状数据，构建了三维地质可视化模型，并能进行与工程密切相关的三维可视化分析。

The contents of this dissertation are as follows:(1). Mathematical models of zero-dimensional, quasi three-dimensional and full three-dimensional in flow path of turbo engine are provided.

本文主要包括如下内容：(1)针对涡轮发动机通流部分的仿真分别给出了零维、准三维和全三维数学模型。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。