查询词典 Cartesian coordinates

MGM is introduced to solve field distributions in 3-D electron optical systems. The difference equation, the discrete form of Laplace's equation, is deduced in 3-D Cartesian coordinates. In view of the smooth effect, MGM combines Gauss-Seidel iteration with a technique known as coarse grid correction. Formulae for restriction and prolongation are deduced and expressed in terms of tensors.

将多重网格法引入电子光学系统中三维静电场的计算，对三维笛卡尔坐标系中的差分方程，采用高斯-赛德尔迭代法求解差分方程组，并结合迭代过程讨论了粗网格的误差校正技术；在不同网格层之间进行场值的限制和延拓，推导了三维静电场中的限制、延拓公式并以张量的形式表示。

Cartesian coordinates Newton trend, electrical engineering and automation of the design students.

直角坐标下的牛顿潮流计算，是电气工程及其自动化的学生的课程设计。

This coordinate system is in a way a generalization of Cartesian coordinates in Euclidean space.

这种坐标系统可以看成Euclidean空间的笛卡尔坐标的一种泛化。

Cordic algorithm vhdl realized, is used to achieve a very Cartesian coordinates with the transformation between.

详细说明： cordic算法的vhdl实现，是用来实现极坐标同直角坐标之间变换。

It resolves the backward of long delay in fast-changed acceleration of target tracking in Cartesian coordinates or spherical coordinates.

该方法克服了在直角坐标系和球坐标系上估计目标快变加速度机动延迟大的缺陷，能实时、精确地估计出目标加速度、速度和位置。

According to the limited space the end of all surface sampling points in 3D space within the Cartesian coordinates, then be converted into computer on the screen coordinates of the pixel, thus drawn with a real sense of three-dimensional images.

根据有限空间中底面上所有采样点在三维笛卡儿空间内的坐标，然后将其转换为计算机屏幕上的像素点的坐标，从而绘制出具有真实立体感的图像。

Use is made of the elliptic coordinates for the ease of treating ellipse shaped boundary, while the analytical results for the components in the Cartesian coordinates are provided for convenience of application.

分析引入椭圆坐标，以助于处理问题的边界条件，并最终给出直角坐标下各分量的对应结果，以便于实际应用。

How to get the most precise three_dimensional cartesian coordinates of the station occupied by a totalstation through GPS unit integrated in it is emphasized,and then they are transferred to the local two_dimensional plane coordinates and the orthometric height by a series of mathematical models.

在讨论GPS与TPS两大测量技术特点的基础上，研究了两者的集成技术和数据转换问题，重点是如何利用GPS技术实时求得TPS的测站空间直角坐标，再通过合适的数学模型转换为地方坐标系的二维直角坐标和正常高。

Then the Cartesian coordinates was converted to spherical coordinates in which the watermark was embedded.

先将3D物体模型转换到仿射不变空间，然后把顶点坐标转换到球面坐标，利用球面坐标来嵌入水印。

The main conclusions are as follows.(1) In Cartesian coordinates no catastrophe occurs in the magnetic flux rope system embedded in closed background fields, whereas in spherical coordinates, the system exhibits a catastrophic behavior.

主要结论如下：（1）在直角坐标下，闭合背景场中的磁绳系统不会发生災变；在球坐标下，日冕磁绳系统存在灾变现象。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。