查询词典 symmetry axis

Secondly, the key technology of how to align point cloud with surface feature model of human body, analyze error, adjust position are researched and the algorithms of calculating center of mass, inertia axis, and symmetry plane are successfully introduced.

然后，研究了对齐后的模型，如何将点云投影到曲面，识别出曲面特征，并对点云进行参数化和采用基于约束及能量优化法算法进行曲面重构，快速的建立不同人体的光滑G~1连续的B样条参数曲面模型。

Three dimension metal plastic deformation of special shaped products was transformed into two dimension axis symmetry problem, analysis model of the continuous stream and strain rate fields were sough.

将三维金属异型材挤压塑性成形问题转化为二维轴对称成形问题，求解椭圆异型挤压金属塑性成形连续流动场和应变速度场的数学解析模型，并应用金属塑性成形理论，建立了精密挤压异型材优化模腔的数学模型，同时为精密快速地实现挤压模腔的CAD/CAM一体化目标提供了技术支持。

The cranking term breaks the time reversal symmetry, and the projection of the single-particle angular momentum on the intrinsic symmetric axis is no longer a good quantum number.

推转项的引入破坏了时间反演对称性，单粒子角动量在内禀对称轴上的投影量子数已不再是好量子数。

The mechanical flowmeter with symmetry structure , straight flow channel and stand alone transverse axis impeller set is designed.

普遍认为，机械式热量表与电磁式热量表、超声波热量表相比，因其存在转动部件，使用寿命和测量精度相对低些。

The crystalline structures of the film materials are highly c-axis oriented wurtzite symmetry.

随着烧结气氛中氧含量的减小，薄膜的沿c轴生长的趋势加强。

The result is that temperature distributing is along thickness direction and nonlinear, temperature stress distributing is symmetry about lengthways axis of the wall, and the temperature stress in the corner of the windows and osculant part between the wall and the beam or the pillar is bigger than the other part.

结果显示混凝土砌块整体建筑的温度是沿墙体厚度方向分布的；温度应力的分布是关于墙体纵向对称轴对称的，在洞口端角处以及圈梁、构造柱与墙体的接触处温度应力相对较大。

These palaces are northern and southernly along one arranging to the medial axis thread , and spreading out to the both sides , the north and south is taken directly , the left and right sides symmetry .

这些宫殿是沿着一条南北向中轴线排列，并向两旁展开，南北取直，左右对称。

We have got the following conclusions from the simulation in the thesis:(1) In even diameter hole, the tangental velocity has the characteristic of combination vortex; with the boundary of points for maximal speed, the insides is norm forced vortex, the outside is norm free vortex; the axis symmetry of tangental velocity is very well.

等直径工件孔内的螺旋流场，其切向速度分布具有组合涡的特点，以最大切向速度点形成的面为界，内部是强制涡，外部是自由涡，其轴对称性很好。

Well-aligned nanoscrews are single crystals grown along the c-axis, with 18 sides on their heads but six concaves on their stems, while the whole is six-fold symmetry.

定向生长的纳米螺杆呈单晶态、c轴择优取向生长，且具有头部十八面体茎部六面体的结构。

Qinhuangdao 066004, P.R. China）Abstract: On basis of the theory of metal plastic fluid and research of die cavity on non-axis-symmetry extrusion of special-shaped products, in virtue of mathematical research results of the conformal mapping theory,by using method of normal convergence, numerical value analysis of mapping function was built.

摘 要：针对非轴对称金属异型挤压塑性流动及模腔研究的理论课题，借助于近代共形映射数学理论研究成果，利用法线收敛法，建立了映射函数解析方法。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。