Based on the principle that the normal vector of a point from the surface of revolution intersects its rotational axis, a geometric method is proposed to estimate the axis of fragmented relic and restore its profile curve.
根据旋转面的轴线与其表面顶点法矢相交的几何准则,提出一种估计轴对称破碎文物轴线的几何方法,进而获得文物碎片的母线信息,生成具有内外表面的文物复原模型。
So the reconstruction of surface of revolution becomes a necessary task in reverse engineering.
旋转面是工业产品中常见的一种外形。
In this article,we choose the theory of rotating the criterion surface and the least area rule to assess the planar degree by choosing the limit points.
采用了选择极值点的方法 ,用基面旋转原理以最小区域法评定平面
We present application of this technique to generation of revolution surface.
流曲线曲面造型是一种自由曲线曲面造型技术,尝试用这种方法生成旋转曲面。
This article discusses the NURBS representation of revolution surface and sphere.
本文研究了旋转曲面和球面的NURBS表示问题,给出了用NURBS曲面表示旋转曲面时,计算其控制顶点和权因子的一般公式。
A new method for quickly constructing rotation surfaces;
快速生成旋转曲面的一种新方法
Design of rotation surface with given Gauss curvature function;
给定Gauss曲率函数的旋转曲面的设计
Design of rotation surface with given principal curvature function
给定主曲率函数的旋转曲面设计
Computing aerial camera′s image plane revolution by coordinate conversion;
应用数学坐标变换方法计算航空相机像面旋转
The rotational inertias of uniform rotational rigid surfaces about the around axis
均质旋转面绕旋转轴转动的转动惯量
total propeller-disk area
螺旋桨旋转盘总面积
A turning to the right.Used especially of the plane of polarization of light.
向右旋转向右旋转,尤指光的偏振面
A plane section of a surface of revolution containing the axis of revolution.
切平面通过旋转轴回转面的部分平面
a windlass rotated in a horizontal plane.
在水平面旋转的绞盘。
spherical union swivel
球面活管接旋转接头
cylinder rotates to move bolt; tumblers are pins; inserting the key lifts and aligns the pins to free the cylinder to rotate.
柱面旋转移动门闩;旋转的是插脚;插入钥匙排列插脚使柱面旋转。
A counterclockwise rotation, especially of the plane of polarized light.
左旋转逆时针方向旋转,尤指光的偏振面
To revolve or cause to revolve.
旋转旋转或引起旋转
The scene was swimming around Natalie.
这个场面在娜塔丽面前旋转。
The enantiomer that rotates the plane to the right is referred to as the dextrorotatory.
使平面向右旋转的对映体,称为右旋对映体。
flat surface that rotates and pushes against air or water.
旋转的平面能够推动水和空气。
a self-contained weapons platform housing guns and capable of rotation.
里面能放武器的地方,它能随着炮旋转。
an apparatus to measure the rotation of the plane of vibration of polarized light.
测量偏振光振动平面的旋转的仪器。
It dove toward the Earth at great speed, spinning rapidly, out of control.
以极高的速度飞快旋转着坠落地面。
the cage is a cylindrical framework that rotates as a small animals runs inside it.
一种动物能在里面跑的旋转的笼子。
rotation of the hands and forearms so that the palms face downward.
手或前臂的旋转以致手掌面朝下。
The galaxy spins much like the cream on the surface of a cup of coffee.
星系旋转于咖啡表面的奶油很相似。