三维空间

Method］from january 2003 to may 2006,32 patients were corrected with qin si-he's orthotics devices on the ilizarov principle of tension-stress,which involved 15 males and 17 females,the age ranged from 10 to 25 years.among these patients,2 were caused by peroneal nerve injury,l by tumor in the vertebral canal,5 by meningocele,11 were caused by poliomyelitis,13 by congenital talipes equino-varus.in accordance with deformities,external fixator and limitied operative methods were dertermined.the limited release of soft tissue were performed in 7 patients,limited osteotomy in 25 patients.the dynamic muscle balance operation were performed in 9 patients with imbalance of muscle strength.according to the ilizarov technique,the fixative rods were installed.the telescopic rods on the apparatus were rotated one week after the operation,the divices had corrective function in three-dimensional directions.the deformity of talipes equinovarus,internal rotation and drooping of the forefoot were gradually corrected,and the patients could bear weight and walked on the deformed foot.the mean duration of traction were 42 days,then removed the external fixator maintained with plaster for a site time.

方法］2003年1月～2006年5月，根据ilizarov张力应力法则，应用秦泗河改良的外固定矫形器，遵循ilizarov穿针固定的基本原则，共手术治疗马蹄内翻足32例，男15例，女17例；年龄10～25岁，平均17岁。病因：腓总神经损伤2例，腰椎管内肿瘤1例，硬脊膜膨出5例，小儿麻痹后遗症11例，先天性马蹄内翻足13例。术前用足掌的前外缘负重行走者11例，用足的外缘或足背外侧负重者21例。根据马蹄内翻足畸形程度、性质和患者年龄，确定实施有限矫形手术的方法和外固定矫形器治疗。本组7例同期实施有限的软组织松解术，25例同期实施了有限的截骨术和跗骨间关节融合术，9例合并踝关节内外翻肌力明显失衡者，同期行足部肌腱转移的肌力平衡术。然后安装外固定矫形器。术后按作者制定的管理程序，7 d开始旋转相应的螺纹牵拉杆，对器械进行三维空间的缓慢调整，先矫正前足内收和后足内翻，后矫正足下垂畸形，直至达到矫形要求的标准。在矫形的过程中定期进行x线检测，以防止发生踝关节前后移位，治疗期间允许患足负重行走。术后平均牵伸42 d，拆外固定器后患足再上石膏固定适当时间。

By combining the State's 863-708-4-5 task, study is made to the key technique of three-dimensional dynamic simulation of LEO/MEO Satellite network network-grouping based on virtual reality in this paper .

由于LEO／MEO星座网络具有独特的三维空间特性，在LEO／MEO卫星网络设计与仿真中采用虚拟现实技术已成为一个新的研究课题。

Flow patterns,spatial distribution of temperature and chemical species,and growth rates during growth processes of GaN in planetary metalorganic chemical vapor deposition reactor are simulated three-dimensionally based on computational fluid dynamics theory.

基于计算流体力学在三维空间中模拟了水平行星式金属有机物化学气相沉积反应器生长GaN材料的流场、热场、反应物与生成物的分布以及材料生长速率等重要物理参数。

The microseismic monitoring on the two zones posses not only short period, low cost, high reliability, but also realize continuous and dynamic monitoring in 3D space .

利用微地震技术进行两带监测具有周期短、费用低、成果可靠，并且可实现三维空间连续、动态监测等特点。

One point-detector imitates facet in ommateum, image detector imitates one whole ommateum, and it's visual function. Object's 3-D information is got using two point-detectors.

一个点源头模拟了复眼中的一个单眼，成像头模拟了整只复眼对环境和目标的成像，利用两个点源头的信息可以得到目标的三维空间方位信息。

The orthograph can be transformed to the 3D graphics by using 3D functions in AutoCAD, thus all analysis and reasoning for the solution can be clearly visualized in 3D space, and then by baking to the 2D environment the solution can be easily made.

借助AutoCAD的三维图形功能，可将平面正投影图转化为空间三维图形，在三维空间进行分析、推理和求解，然后再返回二维作图，使解题过程概念清晰，可视性强。

Perspectine Science start gradually establish the methods of the line perspection of descripe object and spatial and other perspective science Nouadays,the research of people's visual sense and consciousness expands the analysis realm of perspective science.

在绘画艺术和其他技术性的设计中，透视学是视觉艺术领域中的技法理论学科，是研究如何把现实世界中的三维空间表现在一个二维的平面上，使这个平面在真实程度上具有立体空间感和深度距离感。

ABSTRACT Investigation on the Structures and Structure-Activity Relationships for Acidic Phosphonate Rare Earth Extractants Molecular dyna...

用分子动力学模拟退火方法、半经验量子化学方法（PM3）研究了28种烃基磷酸酯系列萃取剂的三维空间结构和电子结构。

Enspace, Polytope, Data structure, Point-tree data structure

在三维空间，常用的数据结构是由结点表、棱边表和面表所组成的&三表结构&。

The microstructure of the sintered bone was observed by scanning electron microscope and mercury porosimeter. Results showed that the sintered bone possess the three dimensional space structure composed of macropores and micropores. The diameter of macropore was 50-400 μm and the diameter of micropore was about 1 μm. Results suggest the sintered bone of β-TCP remains the porous structure of natural cancellous bone which is benefit to growing of new bone.

结果显示β-磷酸三钙煅烧骨具有大孔结构和微孔结构相结合的三维空间结构，大孔孔径为50~400 μm，微孔孔径为1 μm左右，提示β-磷酸三钙煅烧骨保留了天然松质骨的多孔状结构，有利于新生骨组织的长入。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。