查询词典 spherical coordinates

Spherical harmonics is of importance for spherical signal analysis. This paper matches shape similarity among images by a spherical harmonic descriptor.

摘要球面调和分析是球面信号分析的重要工具，本文采用球面调和描述子对图像进行形状匹配。

Theorem 1: If a spherical triangle spherical triangle to the other extreme triangle , the other spherical triangle ...

定理1：如果一球面三角形为另一球面三角形的极三角形，则另一球面三角。。。

An initial spherical parameterization is firstly constructed by lifting planar parameterization to the sphere through the stereographic projection. Then we introduce an efficient approach based on bary centric coordinate to improve the initial spherical parameterization. At last, a uniform spherical parameterization is generated by a Moebius transformation.

通过立体投影将现有的平面参数化方法推广到球面上，得到一个初始的球面参数化；为了减小变形，引入质心坐标进行全局优化；最后用Moebius变换均匀化最终的球面网格。

The device comprises an arc discharge vacuum chamber; wherein, the arc discharge vacuum chamber is connected with a vacuum pump and is internally provided with a graphite cathode and a graphite anode which are connected with a DC supply. The device is characterized in that the graphite cathode and the graphite anode are respectively provided with an upper spherical crown shape graphite plate and a lower spherical crown shape graphite plate which are matched with each other and formed a spherical crown shape capacitor.

它包括电弧放电真空室，电弧放电真空室与真空泵相连接，电弧放电真空室内设有石墨阴极和石墨阳极，石墨阴极和石墨阳极与直流电源相连接，其特征在于在石墨阴极和石墨阳极上分别设相配合的上球冠形石墨板和下球冠形石墨板，上球冠形石墨板和下球冠形石墨板形成球冠型电容器。

The former, such as Bettess element and Astley element, needs geometry mapping and shape functions in terms of local coordinates, while for the latter, the shape functions are directly expressed in terms of global coordinates. This paper reviews the state-of-the-art and recent advances of the infinite element method for unbounded domains.

无限元分为映射无限元和非映射无限元：映射无限元需要引入几何映射，在局部坐标系中构造插值形状函数，如Bettess 元和Astley元；非映射无限元则直接在整体坐标系中构造插值形状函数，如Burnett元。

Equations of SBFEM for a seepage problem are derived with a transformation from Cartesian coordinates to scaled coordinates.

通过比例坐标与直角坐标之间的转换，推导渗流问题的比例边界有限元方程。

The unified mathematical description of these two ways usually uses the Cartesian coordinates or polar coordinates formulas.

这两种表示的数学描述通式，一般是在直角坐标系下的点或者矢量表达式。

Professional mapping, spatial coordinates of the earth and Cartesian coordinates interchangeable VC source.

测绘专业中，空间直角坐标与大地坐标互相转换的VC源代码。

The conventional linear and circular interpolation in Cartesian coordinates were supplemented by polar coordinates and helical interpolation.

传统的笛卡尔的线形和环形内插法结合被极坐标和螺旋插补所补充。

The methods of trajectory planning and trajectory generating are analyzed both in joint coordinates space and Cartesian coordinates space based on kinematics of robot.

在机械手运动学和动力学的基础上，讨论在关节空间和笛卡儿空间中机器人运动的轨迹规划和轨迹生成方法。

There had been a moment during the breakfast meeting, though, after the backslapping and the small talk and when all of us were seated, with Vice President Cheney eating his eggs Benedict impassively and Karl Rove at the far end of the table discreetly checking his BlackBerry, that I witnessed a different side of the man.

那次早餐会期间，在表示过关心和寒暄以后，我们所有人坐了下来，我注意观察了一下，副总统切尼面无表情地吃着班尼迪克蛋（Eggs benedict，源自美国，以英式松饼、火腿、水煮蛋以及荷兰酱组合而成），卡尔。罗夫在餐桌的远端谨慎地经常查看他的黑莓手机，我目睹了他所不为人知的一面。

Talk Undelete failed; someone else may have undeleted the page first.

Talk 无法删除选定的页面或图像（它可能已经被其他人删除了）。