查询词典 planar developable surface

It is a binary format for representation of planar geometric shapes, text labels and some other information in hierarchical form.

它是一个二进制格式为代表的平面几何图形，文本标签和其他一些信息的分级形式。

Compared with traditional DEM or TIN based methods, this pure vector approach obtains not only the topological structure of drainage system in planar graph, but also the valley distribution polygon range. Depending on geometrical computation and judgment of vector line, polygon, the structured properties in drainage representation is enhanced, avoiding the case of noise disturbance in DEM based method. The core algorithm makes use of the ability of Delaunay triangulation in detecting hierarchical structure of each contour line.

中文摘要：基于Delaunay三角网模型在矢量等高线基础上通过弯曲特征分析，给出了一种地形结构特征提取及谷地树组织的方法，与传统的基于DEM或TIN数据结构提取地形特征的方法相比，该方法不仅得到了谷地系统在平面图上的拓扑结构，还获得了河谷在空间分布上的汇水范围，依托矢量线、多边形的几何关系判断，增强了谷地树组织中的结构化，避免了DEM方法中的噪音干扰，方法的核心是Delaunay三角网在单根等高线弯曲深度表达上的层次结构识别。

First, based on phased array antenna's mono-pulse goniometry and separate coordinate technology about phase control, the antenna beam pointing error formula, caused by phase quantization error, is derived from linear array and circular array to planar array and cylindrical array.

首先以单脉冲相控阵天线测角原理为基本理论出发点，利用相位控制的坐标分离技术，基于线阵、圆形阵等简单形式的相控阵天线，推导了平面阵、圆柱面阵等相控阵天线由相位量化误差引起的波束指向误差公式。

The optimization for the configuration of first-order planar high-Tc dc-SQUID gradiometer which is widely used in unshielded environment is also involved in this thesis.

对于在无屏蔽环境下普遍采用的高温超导 dc-SQUID 一阶平面式磁场梯度计进行了图形结构的优化设计。

This planar gradiometer was used for non-destructive evaluation on detecting conducting aluminum plates by performing eddy current testing in unshielded environment.

我们将该器件作为磁传感器，可以利用涡流检测的原理对非磁金属进行无损检测。

We have fabricated and tested high-T SQUID planar gradiometer patterned from YBCO thin film deposited on a SrTiO3 bicrystal substrate.

我们在10×10平方公厘的SrTiO3双晶基片上，设计并制备了YBCO双晶结dc-SQUID一阶平面式梯度计。

This paper made an improvement and development on the traditional graphic solution method for designing planar crank-rocker mechanism in accordance with travel velocity-ratio coefficient K .

对传统的按行程速比系数K设计平面曲柄摇杆机构的图解法做了改进，使该法在解决带有辅助条件的设计问题时更为简捷。

Considering gravitationally the groundwater distribution, the finite element analysis of ANSYS software is used to simplify the 32° slope and bulkhead dam into a planar stress problem to analyze stress and displacement field.

在自重荷载的情况下考虑地下水的组合，用ANSYS有限元分析软件对32°边坡和挡土坝进行了简化为平面应变问题的应力和位移场的分析。

In planar circuits and radiative antennas it is necessary to study plane waves propagating through a gyromagnetic medium magnetized at an arbitrary direction.

在铁氧体基片平面电路和发射天线中必须研究平面波在任意磁化方向旋磁媒质中的传播。

In Chapter 2, an autonomous perturbation of a class of planar Hamiltonian systems with homoclinic orbits is discussed.

第二章讨论了一类含有同宿轨的平面Hamilton系统的自治扰动。

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。