平面

Utilizing the expression of maximum deviatoric stress yield rule on π plance and the relationship betwen π plane and principal stress this paper deduces and examines the shape and position of maximum deviatoric stress yield rule on π plane and the relation to Mises circle and Tresca hexagon .

利用π平面与主应力空间的关系及最大偏应力屈服准则在π平面上的表达式，推导验证最大偏应力屈服准则在π平面上图形的形状、方位及其与Mises圆和纯拉伸Tresca六边形的关系。

According to the obtained characteristics of focal points and principal planes, using the expressions of focal point, focal plane, focal length, principal point, and principal plane of geodesic lenses, the geometry graphic imaging formation principles of geodesic lenses are developed to get the object-image-relation of geodesic lenses .

利用短程透镜焦点、焦平面、焦距、主点、主平面等的表达式，根据短程透镜在大口径范围内理想聚焦，主平面为以焦点为圆心、以焦距为半径、在原点相切的两个圆弧等性质，推导出了短程透镜物像关系的作图法求取原则。

A polyhedron whose vertices all lie in one or the other of two parallel planes; the faces that lie in those planes are the bases of the prismatoid.

顶点都在一个平面或两个平行的平面上的多面体；位于那些平面上的面是旁面三角台的底部。

According to a theory of computer vision, the most general transformation that can occur between a scene plane and an image plane under perspective imaging is a plane projective transformation.

根据计算机视觉的理论，在透视变换的情况下，一个景物平面与一个图像平面之间的变换是平面投影变换。

Puts forward a novel method that is called the method of pseudo base point, which is much simpler than the classic methods when used for analyzing composite motion of rigid multi bodies if the convected motion is planar motion and the relative motion is rectilinear motion.

首次提出用伪基点法进行多刚体系平面复合运动的速度和加速度分析，此法对牵连运动为平面运动、相对运动为同平面直线运动的问题求解比经典方法简便得多。

This project in business mark to enter a bid the course of authorized strength in have adopted broad unite to reach software valuation have adopted GBQ2. 0 editions list valuation software, at the same time, according to reinforcing bar have carried out the professional software of reinforcing bar take quantity; In the technical course of authorized strength of marking part , the authorized strength for the plan of construction progress has adopted dream dragon software, have carried out the layout of network plan, and for being under construction , the plane on-the-spot is also drawn up with dream dragon plane design software , includes main part and foundation mainly in which plane with decorate the construction plane on-the-spot of 3 projects arrange picture; For entering a bid the authorized strength of letter part, us adopt specification enter a bid letter text, guarantee the regularness of entering a bid.

本工程在商务标投标编制过程中采用了广联达软件计价采用了GBQ2.0版本的清单计价软件，同时，针对钢筋进行了专业钢筋软件的取量；在技术标部分的编制过程中，对于施工进度计划的编制采用了梦龙软件进行了网络计划的编排，并对施工现场平面亦采用梦龙平面设计软件进行编制，其中平面图主要包括主体，基础和装饰三项工程的施工现场平面布置图；对于投标函部分的编制，我公司采用规范的投标函文本，保证投标的正规性。

The characteristic expression of multi-value function by using Riemann surfaces is discussed, and the mapping from s-plane into w-plane is also analyzed. Then the relations between pole distribution of fractional-order systems and time-domain response are provided.

本文通过分析多值函数特性在黎曼平面中的表达以及，s-平面与w-平面的映射关系，给出了分数阶线性定常系统极点分布与时域响应的定性关系。

A two-layered structure of control plane without multicast routing protocols is implemented by overlaying novel service control plane over the existing routing control plane to support multicast state aggregate. The interface between the two planes is formulated to support the interaction and cooperation.

针对这些问题，提出了基于汇聚方法的新型MPLS服务质量组播体系结构，提出在现有的路由控制平面上叠加一层面向IP组播服务的控制平面，取代组播路由协议并支持组播聚集，形成2层控制平面结构。

It is inevitable that the length distortion will happen when the control points are linked to the State Gauss Plane Coordinates System in the plane control surveying for speedways,by which the construction elevation plane would separated from the projection plane of control surveying.

高速公路平面控制测量需要将控制点纳入国家高斯平面坐标系，由此不可避免地出现距离长度变形，并导致平面控制测量投影面与施工高程面分离。

Firstly, the quadric surface with three points which doesn't on one line is fitted, and then the tangent plane of this fitting surface is got. Meanwhile, the random tangent plane of surface patch subdivided is got also. Finally, the distance can be obtained through iteration between two tangent planes.

首先对点云数据中邻域不在同一直线的三个点进行局部二次曲面拟合，并求取该拟合曲面的切平面，同时求得细分曲面片任意一点处的切平面，最后在两个切平面上进行点对迭代运算，得到点到曲面片的最短距离。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。