查询词典 rectangular cartesian coordinate system

The author puts forward a method to solve survey control of partial complex space structure by coordinate system conversion and application of threedimensional coordinate system during construction surveying of 108m height exhaust chimney in Tianwan Nuclear Power Plant.

通过坐标系的转换及三维坐标系在田湾核电站108m高排风塔的施工测量中的应用，提出解决局部复杂空间结构测量控制的一种方法。

Under the unified coordinate system of the earth's core, sphere azimuthal projection varied and inverse transformation are described. Methods of dot quadrant tab and border tab based on object coordinate system are introduced. Algorithms of special border tab and area invasion warning examination are discussed.

在统一地心坐标系下，结合球面方位投影变换及逆变换，定义了目标坐标系以及在目标坐标系下的顶点象限标号和边标号，提出了特殊边标号处理算法及侵入区域的告警检测算法。

A Prove that d/dx is a linear operator on V. b You can put a coordinate system on V by mapping p to p(0, p(1), p(2).(Please imagine that flipped 90 degrees so it is a column.) Find the matrix that represents d/dx in this coordinate system.

1证明d/dx是V上的线性算子；2你可以将p映射到p(0， p(1)， p(2)，从而给V加上坐标系（想象将其翻转90°，形成柱体），找出在此坐标系中代表d/dx的矩阵。

A curve coordinate system is established in which the original problem may be reduced to a fixed boundary problem over a rectangular region and thus may be solved by difference methods .

给出了一种用曲线坐标求解椭圆型偏微分方程自由边值问题的数值解法；该方法通过引入两个辅助问题，它们构成一个曲线坐标系。

, the motion of a particle is referred to by a rectangular coordinate system.

在图6-1中，质点的运动是用直角坐标系来描述的。

By using the method for positive term resolution of equations of higher degree, all non-zero real roots of a real coefficient equation of higher degreewere obtained by determiningthe abscissas of intersection points of two monotonically increasing concave functions in the first quadrant of a planar rectangular coordinate system.

用高次方程正项分解方法，将求解实系数高次方程非零实数根的问题，转化成求解两单调上升凹函数在平面直角系第一象限内交点横坐标的等价问题；给出了基于共享存储多指令流多数据流并行计算模型求解任意实系数高次方程全部实数根的大范围收敛性异步并行迭代算法，并分析了算法计算的复杂程度。

In view of the general relationship between corporate income tax burden and scale of enterprises, in a rectangular coordinate system, suppose that ordinate axis stands for tax burden and abscissa axis stands for scale of enterprises, then the curve of tax burden of three cities' enterprises is like a flat S. that's to say, tax burden of the smallest enterprises is relatively high, that of enterprises scaled from 5 million to 10 million yuan is the lowest, and then tax burden increases with the scale going up. The trend continues until the scale of enterprises is beyond 100 million yuan and the top point appears. When the scale of enterprises expands to 800 million yuan, the tax burden starts to turn down and is lower than that when the scale of enterprises is beyond 100 million yuan.

就企业所得税负担与企业规模的一般关系看，如果以直角坐标系的纵轴表示税负，横轴表示企业规模，那么随着企业规模的变大，三城市企业的税负曲线呈一个平躺着的S形状，即规模最小的企业税负较高，500到1，000万元企业的税负率最低，然后企业的税负率开始随规模的增加而提高，这种趋势一直延续到企业规模超过1亿元时达到最高点，待企业规模继续扩张到8亿元左右时，税负开始回落，并将低于原先超过1亿元时的水平。

First fitting the projective straight line in three rectangular coordinate system,second obtaining the straight line equation in space through the projective straight line,and comparing three different straight line equations,finally choosing the best fitting program.

先拟合三个直角坐标系中的投影直线，再通过投影直线求出空间直线方程，并对拟合出来的三个不同的直线方程进行比较，选择最佳拟合方案。

With the experiment, the approximate calculation formulas about the rectangular scanning and the rectangular scanning area are derived.

实验证明了这种通信方式和扫描技术的可行性，为后续研究和实际应用奠定了良好基础。

Two useful formulae for calculating the attenuation constant of conductor loss for TEm0 and TE0n modes of the rectangular waveguide are derived, and the loss characteristic in the rectangular waveguide is analyzed and computed.

根据横向谐振原理和微扰理论，本文提出了一种分析非理想波导损耗特性的新方法，推导出了一组计算矩形波导TEmO和TEOn模导体损耗的衰减常数公式，并分析计算了矩形波导的损耗特性。

Pachomius manual labour was organized as an essential part of the monastic life; and since it is a principle of the monks as distinguished from the mendicants, that the body shall be self-supporting, external work of one sort or another has been an inevitable part of the life ever since.

根据圣pachomius体力劳动组织作为一个重要组成部分寺院生活；以来，这是一个原则的和尚，作为有别于乞丐，该机构应自支撑，对外工作的这种或那种已一个必然的一部分，生活至今。

In order to study the effects of parametrical rolling on the ship movement and tilts, in allusion to ship's navigating in regular following waves, the equation of ship rolling motion is transformed into normal Mathieu equation by proper variable replacement when strong parametrical excitation in restoring moment varied according to sine or cosine wave.

为研究参数横摇对船舶运动和倾覆的影响，通过对船在规则波上随浪航行时，恢复力矩中出现的1个以正余弦规律变化的强参数激励项进行适当的变量置换，将船舶的横摇运动方程转换成标准形式的Mathieu方程。