查询词典 3D

Through photoemission experiments,the 3d- 4s hybridization and very high density of 3d states can be demonstrated clearly.

由于杂化使得3d带的空穴参与了导电过程，而高的态密度使其具有极高的有效质量。

Results among 15 cases, eight cases of Loose bodies about right keen joint;three cases of left keen joint;three cases of both keen joint ;one case of pilosity dissociates bodies;two cases with joint effusion ;six cases with soft tissue swelling.16-slice SCT with 3D reconstruction demonstrated stereoscopic morphology of normal and lesions clearly with MPR correctly demonstrated details and density ,shape and size of lesions.conclusions Sixteen-slice SCT with 3D and MPR techniques can provide valuable spatial information of diseases in bones and joints of wrist and foot which correlated well with that of pathological anatomy .

结果 15例患者中，右侧膝关节游离体8例，左侧3例，双侧3例，多发游离体1例；其中2例伴有关节积液，6例有关节周围软组织肿胀。16层螺旋CT的3-D图像可清晰显示游离体的立体形态，MPR图像则可以多平面，多角度地观察游离体的大小、形态、密度、位置，对病变显示满意。结论多层螺旋CT重建能提供骨关节病变非常有价值的空间关系信息，其表现接近病理解剖，临床应用价值大，有利于临床医师选择治疗方案、制订手术计划。

By analyzing the inherent relationship among the image plane,the mirror plane and the correspondences,this paper puts forward a novel way for 3D hand reconstruction,which not only facilitates theoretically analyses for further research,but also make it easy to reconstruct a 3D object with high accuracy.

1引言人机交互和信息处理是21世纪公认的四项重大技术之一，基于视觉的自然手的重建和识别是实现自然和谐的人机交互系统的一个关键问题，也是进一步进行基于视觉的虚拟手研究中要解决的一个瓶颈问题。

But return to have no more complete 3D plotting system at presentThis paper is focused on the research and building-up of a 3D military plotting system and main contents are as fol...

但当前还没有比较完整的三维军队标号系统。

Preoperatively and postoperatively computed tomographic scanning was performed in every patient. For the CAD treatment group, firstly, the 3D graph of the patient's skull was built based on the CT data using the reconstructing function of Mimics 8.11. Then the 3D file was imported to Geomagic 4.0. The injury lateral was resected and replaced by the mirror of the intact side, so an intact skull was generated at last. Consequently, a model was manufactured in a technical machine. The last step was to prebend the titanium mesh on the model.

CAD/CAM治疗组是利用术前诊断CT，将DICOM格式CT数据输入图像处理软件Mimics8.11，由软件生成颅颌面骨STL格式的三维图像文件，应用另一个图像处理软件Geomagic4.0读取该文件，并应用镜像工具以中线为轴线生成健侧半的镜像，最终得到双侧对称的颅颌面模型，将该图像信息输入快速成型系统，通过逐层树脂堆积，生成树脂头模。

Under the help of 3D molding software,doctors can use DCT to obtain a visual 3D mode of the Alveolar bone,which facilitate implant placement、previse the Prognosis、and restoration. In this way ,doctors make implant placement and the restoration more safely and more efficiently and perhaps finish the implant therapy in only one vist .

经DCT断层扫瞄，医生把这些扫描数据输入电脑三维成型软件，就能制作出可在屏幕上直观可视的三维种植体模型，这样就可预知适宜种植的部位及种植深度，预知术后的种植效果以及制作最终修复体，从而确保手术的精确度和治疗过程安全快捷，快速安装最终义齿，一次性完成种植治疗。

Computer guided noninvasive implant: we use Three-Dimensional Computer Tomography for dental use to the pvease location. Under the help of 3D molding software,doctors can use DCT to obtain a visual 3D mode of the Alveolar bone,which facilitate implant placement、previse the Prognosis、and restoration. In this way ,doctors make implant placement and the restoration more safely and more efficiently and perhaps finish the implant therapy in only one vist .

是利用口腔专用电脑三维CT精确定位经DCT断层扫瞄，医生把这些扫描数据输入电脑三维成型软件，就能制作出可在屏幕上直观可视的三维种植体模型，这样就可预知适宜种植的部位及种植深度，预知术后的种植效果以及制作最终修复体，从而确保手术的精确度和治疗过程安全快捷，快速安装最终义齿，一次性完成种植治疗

ABSTRACT The dissertation focus on the following aspects of Target Detection and Recognition study:(1) Target detection based on movement information;(2) 3D projective invariants and 3D object recognition;(3) Target recognition based on artificial intelligence .

本学位论文主要围绕目标检测与识别的以下几个方面进行了深入的研究：(1)基于运动信息的目标检测方法；(2)基于射影不变量的3D目标识别方法；(3)基。。。

Because projective invariance between 3D object and its 2D image could overcome the problem caused by viewpoint, calibration and feature correspondence effectively, it has been attracting more and more attention and research efforts over the last 20 years. For more comprehension to this field, firstly, the main research contents of the invariance-based 3D object recognition is discussed, including geometry frames and their invariance, as well as the way to apply the geometric invariance.

为使人们了解该领域的研究现状，以对该领域的研究有所启发，首先讨论了基于几何不变性的3D物体识别方法的研究内容，包括研究的几何框架和其不变性以及几何不变性在3D物体识别中的主要应用；其次，总结性地评述了该领域的研究现状；最后，提出了研究的发展方向。

On the other hand, a lot of methods have been researched and developed in CAGD for computing QSIC in 3D real projective or Euclidean space. The main problem of these methods is the lack of a simple and effective classification of QSIC in 3D real projective space and then lead to their weaknesses on robustness and accuracy.

另一方面，实空间中对QSIC的计算方法在CAGD领域得到了广泛的研究，提出了许多算法，但这些算法对QSIC在实空间的拓扑分类都未能给出简单有效的方法，并因此造成了QSIC几何计算的稳定性和精确性等方面的问题。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。