查询词典 plane coordinates

More precisely, we use the spherical coordinates for independent variables in space, and so avoid the approximation of boundary conditions on the surface, which is required, if we use the Descartes coordinates. Next, we use the Descartes coordinates for the components of velocity, which simplifies the actual computation and numerical analysis essentially.

我们所设计的求解Navier-Stokes方程的混合谱格式具有如下的一些特点：首先，我们采用混合坐标方法，即用球面坐标表示空间自变量，而用Descartes坐标表示速度分量。

In the absolute coordinate method, the position and orientation of every rigid body in the system are represented by the absolute coordinates with respect to the reference base of the system, the array of absolute coordinates of the system consists of the absolute coordinates of all rigid bodies.

在绝对坐标法中，每个刚体的位形坐标相对于系统的参考基定义，系统的绝对位形坐标列阵由系统中所有刚体的绝对位形坐标构成。

The application of polar coordinates system in the CNC LATHE-MILLING;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。

Due to the moving base existence of the minehunting and the frame structure characteristic of the sonar array, a new modeling thought in which the boat body coordinates is regarded as moving coordinates and the whirligig equation of sonar array compared with the self coordinates is founded on the basis of the Euler's theorem and the coordinate transform is introduced.

由于猎雷艇作为动基座的存在和声纳基阵的框架结构特点，提出了以艇体坐标系为运动坐标系，运用变形的欧拉定理和坐标变换建立声纳基阵相对自身坐标系的旋转运动方程的建模思想；将所建立的矢量形式的动力学模型展开整理，获得了状态矩阵形式的猎雷声纳基阵动力学方程，为系统动力学模型的实用化奠定了基础。

Due to the moving base existence of the minehunting and the frame structure characteristic of the sonar array,a new modeling thought in which the boat body coordinates is regarded as moving coordinates and the whirligig equation of sonar array compared with the self coordinates is founded on the basis of the Eulers theorem and the coordinate transform is introduced. The dynamic equations of minehunting sonar array with the state matrix form are founded by settling the dynamic models with the vector form. So it offers theory foundation for analyzing the dynamic characteristic and designing robust control.

由于猎雷艇作为动基座的存在和声纳基阵的框架结构特点，提出了以艇体坐标系为运动坐标系，运用变形的欧拉定理和坐标变换建立声纳基阵相对自身坐标系的旋转运动方程的建模思想；将所建立的矢量形式的动力学模型展开整理，获得了状态矩阵形式的猎雷声纳基阵动力学方程，为系统动力学模型的实用化奠定了基础。

Kinematics and dynamics modeling and analyzing method of a 3-RRRT parallel robot was studied. Kinematic model of the 3-RRRT parallel robot was set up with both the branch bar's relative coordinates and movable platform's absolute coordinates used as it's generalized coordinates. On the base of Kane's equation, dynamics model of the 3-RRRT parallel robot was built. Dynamic Numerical simulation of the 3-RRRT parallel robot was finished by using Matlab software, and so it provides valuable reference for motion control strategy of the 3-RRRT parallel robot.

研究一种3-RRRT新型高速搬运机器人运动学与动力学建模及分析方法，以支链构件相对运动坐标和动平台绝对运动坐标作为广义坐标，建立了3-RRRT型并联机器人的运动学模型，结合带乘子的凯恩方程建立了3-RRRT型并联机器人的动力学模型，并利用Matlab软件平台进行了动力学数值仿真，进而为3-RRRT型并联机器人的控制策略研究提供参考。

Tunnel group construction control net is laid out on the basis of Xiaolangdi GPS firstorder control network. For convenient and fast setting out, firstly established a coordinates system of to take every tunnel axis as northward, transformed national geodetic coordinates which is original tunnel design adopted into every tunnel＇s construction coordinates.

洞群施工控制网是在小浪底GPS首级控制网的基础上布设的，为便于施工和快速放样，首先建立以每条遂洞轴线为北方向的坐标系，并将隧洞原设计采用的国家大地坐标转换为每条隧洞的施工坐标。

The definition of Halton points is introduced and the algorithm complexity is analyzed, then the sampling strategy of triangle plane is introduced, including geometry region partitioning, coordinate mapping between triangle plane and rectangle plane, and computing principle to the coordinates of sampling point. The experiment results compared with Jittered sampling and improved LHS sampling are given.

给出了Halton点的定义，分析了其算法复杂度，在此基础上给出了三角平面的采样策略，包括几何区域的划分、三角平面与矩形平面的坐标映射、采样点坐标计算原理；并将该方法与Jittered采样法、改进的LHS采样法进行了比较。

The amorphous formation and non-formation region can be divided by a straight line in pure Miedema coordinates or a plane in three dimension chemical coordinates.

发现在纯Miedema坐标中非晶形成区与不形成非晶区能够用一直线分开，在三维化学坐标中用一平面分开。

Reducing the scale may be considered to be part of transforming geographic coordinates to plane coordinates.

另外，还原地图比例尺也可以被认为是坐标变换过程的一部分。

"Please accept this talisman as a token of our thanks."

请收下这个护身符以表达我们的感谢。

If I have that magic, I will be more acceptable in the society.

如果我拥有那种魔法，我将更加被这个社会所容纳。