查询词典 rectangular coordinates

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。

We treat the problem by separating the physical region into two domains useing spherical coordinates and bispherical coordinates respectively.

软球粒子因拥有特殊的物理结构，因此能够更贴切地描述生物粒子或人造复合粒子，也会造成许多不同於硬球的结果出现。

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。

The main ingredient is the passage from the Cartesian coordinates to the radially symmetric coordinates.

从笛卡尔坐标系到径向对称坐标系的变换是本部分的一个重要环节。

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。

It is shown that in Jameson's algorithm is not an orthogonal stream-lines coordinate system, but a local stream-lines coordinate system instead. Nevetheless, because of the finite-difference discretization in Jameson's scheme is not carried out along the direction of s and n, but along the Cartesian coordinates, the analysis on all terms of the full potential equation in Cartesian coordinates reveals that his scheme does take a back-ward difference along the streamwise exactly at all points in the supersonic flow region.

表明其所采用的坐标系不是真正的正交流线坐标系，而是局部流线坐标系；同时由于Jameson方法并不对s，n进行差分离散，而是在原笛卡尔坐标系下作差分离散，对笛卡尔坐标系下的全位势方程中的各项的分析表明，Jameson方法恰好能做到在超音速点沿真正的流线方向作后差分。

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。