查询词典 perspective plane

This paper investigates the converse theorem of rectangular projection theorem in descriptive geometry,and furthermore supplements and confirms another converse theorem,If the projection of two lines intersecting vertically fo rms a rectangle on a certain projecting plane,at least one line of the two lines is parallel to the projecting plane.

通过对《画法几何学》中直角投影定理的逆定理的研究，得出："若垂直相交的两直线在某一投影面上投影成直角，则该两直线至少有一条直线平行于该投影面"的推论。

In order to simplify the mechanical structure of the plane displacement measurement system and reduce the cost of it,this paper introduces a measurement of plane displacement system based on suppositional coordinate axis by employing optical HDNS2000 chip.

为了简化目前平面位移测量装置复杂的机械结构、降低装置的成本，文中利用HDNS2000芯片设计了一种基于虚轴的平面位移测量装置。

First, the paper introduces the moving coordinate system based on the curve tangent vector and the curvature component vectors. Next, the total curvature vector is composed and the osculating plane determined in the moving coordinate system. The curve bending is then calculated and the recursion analysis made on the osculating plane.

鉴于空间曲线上曲率采集面的变化，引入了由曲线切向量和曲率分量决定的运动坐标系，接着在运动坐标系中合成曲率矢量，确定密切平面，然后在密切平面中对曲线进行弯曲计算和运动坐标系的变换分析，并对相关公式进行了推导。

Based on the principle of computer vision, this paper presents a matrix algorithm for the coordinate transformation from visual plane to geographical plane.

在计算机视觉原理的基础上，本文提出了一种求取从视平面坐标到实际坐标转换矩阵的算法。

A coordinate transformation relation between imaging plane and the measured plane, and a expression of line length were built.

在此过程中，同时建立了所测平面与成像平面的坐标点转换关系，以及求解线段长度的一般表达式。

"Of or relating to the coordinate system, or to any of three coordinates in it, formed by two polar coordinates in a plane and a rectangular coordinate measured perpendicularly from the plane."

"坐标系的，或者与坐标系有关的，或坐标产生三条坐柱中的任一个的，这个坐标系由一个平面上的两个极线坐标和一个平面上垂直测量的直角坐标形成。"

Based on the rule that all the coordinate value of the basic vector is integral in coordinate plane, an algorithm for approaching the reference vector in coordinate plane was drawn out, which is easy to be realized by arithmetic and rounding operation.

本文根据基本矢量在两相坐标平面的坐标都是整数的规律，总结得到了在两相坐标平面下对参考电压矢量进行逼近的算法，该算法只需要进行简单的四舍五入与加减运算，易于实现。

From the microstructure analysis of XRD and TEM, it is found that the Pt underlayer possess (111) preferred orientation. The magnetic easy axis of Co3Pt film is transferred from in-plane to out-of-plane as Pt (111) under layer is added, due to the epitaxy between Pt (111) and CoPt (002) films.

经XRD及TEM微结构分析结果，Pt底层具有很强的(111)从优取向，经由磊晶作用能诱发Co3Pt磁性层之CoPt (002)从优取向，而Co3Pt薄膜也由水平转为垂直磁异向性。

Multiple experiments include whole sphere and sphere with cracks due to some spheres have a few cracks in the shell equatorial plane after welding. Then, the nominal compression stress-strain curves corresponding to different included angles θ between horizontal plane and welding line were plotted.

由于其中某些空心球在焊接时出现了孔洞，故分别做了完整和焊接出现孔洞的两种情况下的多组实验，得出了焊缝与水平面夹角θ成不同角度时压缩的名义应力－应变曲线。

A kind of best baffle-beard suitable for applications in the dual-frequency base station antenna is presented, meanwhile, we adopt the PSO algorithm to optimize the parameters affecting antenna pattern such as the phase of the elements, the space between the elements, such that the pattern of antenna can be shaped in the vertical plane （the pattern in the vertical plane has Cosecant beam in the service area）.

针对我国移动通信频率，以基站天线的双频工作以及阵列波束赋形为目标，设计了一种满足基站天线双频辐射要求的最佳反射板形状，并通过PSO全局优化算法优化各单元馈电相位并调整其间距以实现垂直面方向图双频波束赋形的目的（即垂直面方向图在所覆盖的服务区域内具有余割波束）。

It was just a normal day of school

那只是上学的普通一天

Which is a very good reference in this issue.

这是一个在这个问题上很好的参考。