平面

This article shows how a space problems was seperated into two coplanar problems, how both problems of plane grillage and plane frame were calculated, and how they were summed up.

本文阐述如何把空间问题简化为二个平面问题，利用平面板架和平面刚架的程序进行计算，然后叠加，以此来进行强度校核和刚度分析。

The major guide rail plane with flatness more than 0.12mm can be measured using this method.

该测量方法可以测量平面度要求不小于0.12mm的大型导轨平面。

All quadrilateral mesh automatic generation for regular quadric surfaces based on Auto CAD AME;2. Represent Quadric Surfaces Using NURBS and Calculate the Control Vertecs and Weights;3. Through study,the property is found out that planes cutting edgewise quadric curve and quadric intersections from the quadric surfaces become the harmonic division.

文中采用了射影几何的方法，证明了画法几何中关于两个二次曲面相交的著名的复切定理和蒙日定理，通过研究得出了周切线平面和交线平面成调和分割的性质，同时还得出了处于复切的二次曲面必存在相公切的二次曲面的性

Methods 241 cases without liver diseases and hepatomegaly were selected. Their liver volume, the maximal and hepatic hilar cross-sectional areas in normal adult were obtained from abdominal CT examinations.

选择无肝脏疾病和引起肝脏增大因素的CT检查者241例，测量计算正常成人肝脏的体积、最大平面面积和肝门平面面积。

Methods 241 cases without liver diseases and hepatomegaly were selected.Their liver volume,the maximal and hepatic hilar cross-sectional areas in normal adult were obtained from abdominal CT examinations.

本文利用CT对正常成人肝脏大小体积进行测定，并探讨肝脏最大平面、肝门平面面积与LV的关系，旨在为临床判断肝脏大小提供更简便的方法和参考依据。

Points in the physical plane are mapped onto corresponding points in the hodograph plane.

物理平面上的点被映射到速端曲线平面上的对应点。

Two-dimensional seepage flow of free-surface over cutoff wall has been solved by conformal transformation method in this paper. By introducing the hodograph plane and utilizing Schwarz-Christoffel transform, the mapping relational formula between the physical plane Z and complex potential plane has been deduced.

对于越过截渗墙的剖面二维含自由面的渗流，应用保角变换方法求解，通过引入速度矢端平面和应用Schwarz－Christoffel变换，推导出了物理平面Z和复势平面的映射关系式。

By introducing the two dimensional homogeneous coordinates of an infinite point on Euclidian plane,the point coordinates and linear coordinates of an infinite point in straight lines,some theorems and conclusions referred to infinite points are applied in the classifications of structures in this paper.

引入了欧氏平面上无限远点的二维齐次坐标和直线上无限远点的点坐标及线坐标，引用了与无限远点有关的一些定理及结论于结构的分类中。从而给出了可变体系中的常变与瞬变在结构形式上的区别，完善了杆系平面结构几何组成规则的内容

The syntactic study,on the basis of our predecessors achievements,is to analyze the alignment of "geng",while the semantic study,from the respect of informatics,is to analyze its function of copy ing information,including homogeny copy ,antagonism copy and compensation copy .

句法平面是在前人的基础上分析"更"的组合；语义平面则从信息论的角度分析"更"具有部分性拷贝信息的功能，包括同质性拷贝、补充性拷贝、对立性拷贝三种情况。

First, an initial projection matrix is obtained through homography between an image and a scene plane. The homograph matrix between two images, i. e., the image plane and the scene plane, can then be calculated from matching points of these two images. Thus the projection matrix of every next frame can be calculated from homograph matrix between the current image plane and the previous one. Registration of virtual objects is finally completed.

根据这个原理，首先通过一个景物平面和图像之间的单应得到初始状态相机的投影矩阵，然后对后面每帧图像和前一帧进行自然特徵点匹配，通过匹配点对计算出图像之间以及图像与景物平面的单应关系，由此就可以得到每一帧图像对应的相机的投影矩阵，从而完成虚拟物体的注册。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。