极坐标系,polar coordinate system
1)polar coordinate system极坐标系
1.Pseudo-spectral method in polar coordinate system for viscous flow;极坐标系下黏性流动的拟谱方法
2.The difference formula of the bi-harmonic equation is derived in the polar coordinate system.推导出了极坐标系下双调和方程的差分公式,用逐次超松弛迭代法求出圆板平面应力问题的差分解,并和解析解作比较,验证了差分公式的正确性,为解决圆域及其类似区域的平面问题提供了新方法。
3.A torsion difference scheme of the bar with sectorial cross-section is developed in polar coordinate system.导出了极坐标系下扇形截面杆件扭转问题的差分格式 ;用逐次超松驰迭代法求出了扭转应力函数差分值 。
英文短句/例句

1.The origin in a polar coordinate system;the vertex of a polar angle.极点一个极坐标系中的始端;一个极角的顶点
2.There are two kinds of coordinates, Cartesian coordinates and polar coordinates, with which spatial issues are analyzed and calculated.分析和计算的空间问题,一般可采用两类坐标系:笛卡儿直角坐标系和极坐标系
3.A Note on Differential Element Method in Polar Coordinates;极坐标系下使用微元法需要注意的一个问题
4.The application of polar coordinates systemin the CNC LATHE-MILLING;极坐标系在数控车铣加工中心上的应用
5.The Analysis and Improvement of Bearings-only Tracking Algorithm in Correction Polar Coordinates修正极坐标系纯方位跟踪算法分析与改进
6.Rotary coordinates are dynamically established in our matching algorithm, in which an elastic minutiae paring method is used.特征点匹配算法通过动态建立极坐标系和弹性配对特征点来实现 .
7.Development of Macro Programming of Data Interpolation Algorithm under Polar Coordinates and its Application基于极坐标系的数据插补算法的宏程序的开发及应用
8.Application of Ellipsoid Macro Programming Based on Data Interpolation Algorithm under Polar Coordinates基于极坐标系的数据插补算法的椭球宏程序的应用
9.Establishment of Relative Polar Coordinate Method of Lofting Mineral Company Shandong Branch of CHALCO建立相对坐标系的极坐标法施工放样
10.spherical-polar tracking system球面极坐标跟踪系统
11.revolution of polar to Cartesian极坐标-直角坐标旋转
12.resolution of polar to cartesian极坐标-直角坐标转换
13.The measurement equation is linear in polar coordinates but is nonlinear in cartesian coordinates.量测方程在极坐标中是线性的,但在笛卡儿坐标系中却是非线性的。
14.The Research on the NC Programming Technology and the Implementation of the CAM System Based on Polar-coordinate;极坐标数控编程技术研究与CAM系统的实现
15.First Integral of a Class of Autonomous Systems in Polar Coordinates一类极坐标形式的自治系统的首次积分(英文)
16.We carry out a transformation to spherical polar coordinates.我们变换成球极坐标。
17.Beijing geodetic coordinate system 19541954年北京坐标系
18.This coordinate system is called the triad at the point.这个坐标系叫做该点的三面形坐标系。
相关短句/例句

Polar coordinates极坐标系
1.The traditional passive tracking algorithm under polar coordinates and its deficiencies were analyzed.介绍了极坐标系下的被动跟踪算法及存在的问题 ,并分析了其原因 。
2.To improve the precision of manual programming in machining complex curves, the author here introduces data interpolation algorithm under polar coordinates to the macro - processing application, and the formulas for calculation of processing step is developed.针对这个问题,研究了基于极坐标系的数据插补算法在宏程序加工中的应用,并以椭球的宏程序加工为例,给出了加工步长的算法。
3.To solve the problem that using the information of the robot vision or sonar system can not give good self-localization result,a new self-localization method for autonomous mobile robot(AMR) is proposed under polar coordinates.为解决仅仅利用视觉系统或者声纳系统得到的信息进行机器人自定位时存在较大的误差的问题,提出了一种极坐标系下进行自定位的方法。
3)polar coordinates system极坐标系
1.The application of polar coordinates systemin the CNC LATHE-MILLING;极坐标系在数控车铣加工中心上的应用
2.A fast particle-moving algorithm for particle-in-cell simulation of plasmas in polar coordinates system was proposed, in which the local rectangular coordinates approximation was used in the area near the position of the charged particle at every time step.提出了一种在极坐标系下快速推进带电粒子的等离子体粒子模拟算法,该算法在每个时间步长内对带电粒子位置附近的区域采用局部直角坐标系近似,并通过坐标变换,得到粒子运动方程求解的显式格式,从而避免了极坐标系下隐式格式直接迭代求解所带来的容许误差,并提高了计算效率。
3.This article analyses Foucault pendulum movement through the way of polar coordinates system.文章用极坐标系分析了付科摆的运动,比常见的用直角坐标系讨论要简单,力学意义更清晰。
4)multi polar coordinate method多极坐标系
1.In this paper, the scattering of SH wave by the structure surface with multiple semi cylindrical medium inclusion is studied by using a function of complex variable and a multi polar coordinate method.利用复变函数和多极坐标系的方法 ,研究了在结构表面上含有多个半圆形介质夹杂的散射问题 ,首先给出 SH波对多个半圆形介质夹杂的散射波函数 ,并利用多极坐标系的方法 ,来满足介质界面上的连续条件和表面上的边界条件 ,归结为对一组无穷代数方程组的求解 ,简化了问题的求解。
5)bipolar coordinate双极坐标系
1.The bipolar coordinate system in which the two boundary circles of eccentric annuli become the coordinate surfaces is used.使用双极坐标系研究流体在偏心环空内的流动。
2.The mathematic analysis of natural convection in eccentric cylinder was conducted,the medium flow and temperature field were numerically simulated in the bipolar coordinate system.使用双极坐标系对圆筒体内加热元件偏心布置时的自然对流换热进行了研究和分析。
6)Sun-Pole Frame Coordinate System日极坐标系
1.In this paper ,we establish a new Inertial Coordinate System —— the Sun-Pole Frame Coordinate System.本文中建立了一个惯性坐标系—日极坐标系,在该坐标系中研究全球电离层TEC数据变化,剔除由于地球自转、极移等因素引起的变化。
延伸阅读

极坐标系极坐标系polarcoordinates在平面内由极点、极轴和极径组成的坐标系。在平面上取定一点O,称为极点。从O出发引一条射线Ox,称为极轴。再取定一个长度单位,通常规定角度取逆时针方向为正。这样,平面上任一点P的位置就可以用线段OP的长度ρ以及从OxOP的角度θ来确定,有序数对(ρθ)就称为P点的极坐标,记为Pρθ);ρ称为P点的极径,θ称为P点的极角。当限制ρ≥0,0≤θ<2π时,平面上除极点Ο以外,其他每一点都有唯一的一个极坐标。极点的极径为零,极角任意。若除去上述限制,平面上每一点都有无数多组极坐标,一般地,如果(ρθ)是一个点的极坐标,那么(ρθ+2nπ),(ρθ+(2n+1)π),都可作为它的极坐标,这里n是任意整数。平面上有些曲线,采用极坐标时,方程比较简单。例如以原点为中心,r为半径的圆的极坐标方程为ρr等速螺线的方程为。此外,椭圆、双曲线和抛物线这3种不同的圆锥截线,可以用一个统一的极坐标方程表示。图片