查询词典 circle geometry

Prom nt in the modern elementary geometry of the triangle is the nine-point circle .

九点圆在三角形的现代初等几何中是重要的。

The geometry of the crop circle ship is an octahedron at the core of a large tetrahedron.

麦田圈船的几何是一个在大型四面体的核心的八面体。

It has been a while since I have analysed the geometry of a crop circle. My friend and teacher, Heather Clewett-J

2007年6月30日，英格兰 East Field 地区出现一个麦田圈，第一眼看起来感觉很普通，但是还有很多更深刻的内涵包含在这个简单的图案中。

A non-Euclidean geometry that regards space is like a sphere and a line is a great circle.

视空间为球而线为圆圈的非欧几里得几何学。

It featured the vocabulary of the circle, oval, rectangle and hexagon, and design characters including plants as space as well as the order formed through the juxtaposition and copy of the pure geometry.

圆形、椭圆、方形和六边形成为丹麦几何景观的特征词汇，同时也生成了用植物塑造和组合空间、运用简单几何形的并置与重复来创造秩序的几何景观的设计特征。

These buildings are some odd geometry - regular polygon, circle, triangle, rectangle, there are several miles of straight continuous lines.

这些建筑是一些古怪的几何图形——正多边形、圆形、三角形、长方形，还有连绵好几海里的笔直的线条。

Firstly, the developing principles of the cylindrical internal helical gear are proposed through analyzing the movement and geometry requirements, which provides continuous contact between the mating gear surfaces. The tooth surface of the internal helical gear in the new gearing can be imagined as being generated by the normal section of the conjugated surface of the ball-tooth, moving along the radial projection of helix line of the tooth-root circle. Also, the proposed surface can be approximate tangent to the conjugated surface of the ball-tooth along a spacial curve.

首先，通过分析保证行星轮作螺环运动时与内斜齿轮实现连续啮合传动的运动和几何条件，提出了圆柱内斜齿轮齿面的两种形成原理：即由球齿运动包络曲面的法截面沿其齿根圆螺旋线在径向的投影进行拓展所形成的内齿面，以及与球齿运动包络曲面呈近似相切接触的等螺距齿面构成的内齿面。

This part systematically induce the common method of form helps number like number axis method, unit circle method, portrait method and geometry model method.

本部分系统地归纳出以形助数解题常用的方法：数轴法、单位圆法、图象法、几何模型化法。

The ellipse curre equation of circular image is derived based on the theory of spatial analytic geometry and rotation matrix s representation with unit quaternion then a mathematical model of the distortion error is established which relates the distortion error to the foca length of the used CCD camera,the radius as well as the position and the attitude of the inspected circle directly.

研究三维视觉检测中圆的中心经针孔摄像机成像后存在畸变误差的问题，首先基于空间解析几何理论和旋转矩阵的四元数表示法推导出像平面上投影椭圆的参数方程；然后根据参数方程建立圆中心成像畸变误差的数学模型；最后对影响畸变误差的主要因素进行分析。

Content : the concept of computer graphics, development, application and software and hardware systems; Line, circle, oval basic graphics generation, curve and regional filling; The projection geometry and transform; Graphics cutting, blan

内容为：计算机图形学的概念、发展、应用和软、硬件系统；直线、圆、椭圆基本图形的生成、曲线及区域的填充；几何图形的投影与变换；图形裁剪、消隐处理；光照模型和图案映射等真实感生成技术，并用VC++进行交互式图形设计实例。

But GST= 0.156, Nm=1. 588. As a result, the foundation of Youyongchi Avicennia marina population was the result of the migration of hypocotyles and human factors.

这项工作可以为海岸防护林中新引进种类的判定以及为研究种群建立者效应方法的确定提供科学依据。

The two-dimensional CDRC-ADI-FDTD update equations for collision unmagnetized plasma are induced. The unconditional stability of the CDRC-ADI-FDTD formulation for collision unmagnetized plasma is obtained by the examples.

推导了碰撞非磁化等离子体中的二维CDRC-ADI-FDTD迭代公式，并用算例验证了碰撞非磁化等离子体CDRC-ADI-FDTD算法也是无条件稳定的。