三直角的

This invention has been possible since the problem of connecting the corner cube piece with the solid interior has been solved, so that the said corner piece can be self-contained and rotate around any semi - axis of the three-dimensional rectangular Cartesian coordinate system, be protected during rotation by the six caps of the solid, which is the central pieces of each face, to secure that the cube is not dismantled.

自从通过可靠的内部连接魔方角块的问题解决后，高阶魔方的出现成了可能。角块能够完全独立，并在三维直角坐标系的各个轴上旋转。而且在角块转动过程中，有6个可靠的cap提供保护。这种cap就是每个面的中心部分，它们可以保证魔方在转动的过程中不会散架。

In this research, the plane 2D mathematical model under Cartesian coordinate system and the

首先建立了直角坐标系正交网格下的平面二维数学模型及复杂边界适体坐标条件下的三维紊流数学模型，对方程的离散差分格式、控制方程的求解、初始边界条件、动边界处理等问题进行了分析研究，并编制相应的计算程序。

A new method for the generation of curvilinear grid has been proposed. Some curvilinear grid generation examples show that satisfactory grids can be generated for simple-connected regions and connected- regions with complex boundary by using the proposed adjusting factors.

3提出了一种生成边界处正交曲线网格的新方法，收敛速度快，在复杂边界流场区域的数值计算中，有很大的实用价值；为了克服复杂几何边界给数值计算带来的困难，提高通用性以及水流的预测精度，本文采用上述网格生成技术，在直角坐标系三维非恒定明渠紊流的沿层积分数值模型基础上，发展了曲线坐标系下的多层紊流水动力模型。

Detail are introduced as following: transfering the LS equation to difference equation, setting the initial conditions for different shape explosive at different initiation way (point, line, plane, divergent or convergent); the dealing method of different edge conditions; how to draw the curve graph in two dimensional space or surface graph in three dimensional space with the calculated data.

本文提出了在三维直角坐标系中爆轰波传播LS方程离散化方法，建立了相应的差分方程，研究了对不同形状炸药在多种起爆形式（点、线、面、散心、聚心）下初值条件的设定，以及各种边界条件的处理方法。

With the gridlines of the rectangular coordinate system located on the object being measured, the outline of the object is produced by this system, then it is applied to the measurement and diagnosis of multi-parameter of the irregular tri-dimensional object.

该系统根据定位于被测量物体上直角坐标系的格线，生成该物体的外形，从而用于不规则三维物体多种参数的测量和诊断。

In this paper,the numerical methods for the LS equation of three-dimensionaldetonation wave are introduced.

本文提出了在三维直角坐标系中爆轰波传播LS方程离散化方法，建立了相应的差分方程，研究了对不同形状炸药在多种起爆形式(点、线、面、散心、聚心)下初值条件的设定，以及各种边界条件的处理方法。

The formula for transforming the measured coordinates into rectangular coordinates and generating a correct 3D image is given.

测量得到的目标三维坐标并不是在直角坐标系下得到的，给出了坐标转换的公式。

In this paper,a technique using three right-angle points to achieve camera external parameters is brought forward based on the digital camera model and the known camera interior parameters.

在介绍数码相机成像理论模型和已知相机内部参数的基础上，提出了一种新的利用直角三点来实现数码相机外部参数标定的方法。

Ligan in the bottom of the displacement constraints imposed three in the top of stents, at 1.40 on the level of two-way Ligan vertex imposed constraints to consider stent top and Timber Beam friction between the role of the bar and Weigan the rectangular fastener, a semi-rigid, torsion spring used to simulate.

在立杆底部，施加三向位移约束；在支架顶部，对位于四角的立杆顶点施加双向水平约束，以考虑支架顶部和木梁之间的摩擦力作用；横杆与立杆之间的直角扣件，属于半刚性连接，用扭转弹簧来模拟。

This paper presents the separate resolution of free rigid body motion into tree wrench motion s.

文中将自由刚体运动分解为三个直角坐标轴上的力螺旋运动，同时也给出了自由刚体运动在这种力螺旋运动的分解下其速度和加速度的表达

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。