查询词典 element of surface

Analyzed on the tunnels that used EPB method in different soils, the more logical three-dimensional finite element model is based, which can reality represented the soil transfiguration. 3 Due to the engineering example, a 3D FEM simulation model was founded. The model was used to study the rules of soil deformation and surface settlement during shield tunneling. 4 The characteristics of loess include the module, conglutination force and inner friction angle of the loess, affected the soil deformation. 5 The influence factors to the surface settlements such as the depth of soil, the outer diameter of the shield tunnel, the released stress at the cutting face, the fill ratio of the shield tail void, pouring-slurry press, thrusts and lengths of shield and digging steps were studied using the FEM method. References is brought forward in the loess areas of Xi'an was proposed.

通过对不同土质条件下盾构法进行地铁隧道施工的有限元分析，全面反映盾构推进对土体变形的影响情况； 3根据有关勘测资料，建立合理的盾构法施工三维非线性有限元模型，对盾构法施工引起的地层变位和地表位移情况进行计算，分析了盾构施工引起的地层变形规律和地面沉降规律； 4研究了黄土特性(地基模量、粘聚力和内摩擦角)对盾构法施工中土体变形的影响； 5利用三维有限元对盾构施工过程中影响地面沉降的因素(覆土厚度、隧道外径、开挖面压力变化量、注浆压力、盾尾空隙填充率、开挖步长、盾构机的长度和推进力等)进行研究，为今后西安地区地铁的建设提供参考。

In order to realize the miniaturized frequency selective surface, a new miniaturized-element frequency-selective surface is presented by bending the edge of square loop aperture into the inner space to lengthen the resonant length.

摘 要：为了实现频率选择表面单元的小型化，通过在方环单元的内部空间中弯曲方环边长来增加谐振长度，设计了一种新型小型化频率选择表面。

An optical element such as a rear projection screen for an image display device comprises at least two substantially rigid sheet members each having a first major surface and a second major surface providing a plane of incidence and a plane of emergence, respectively, through which light is transmitted sequentially. A first sheet member comprises a Fresnel lens, and a second sheet member comprises a lenticular lens array on each of the major surfaces thereof.

一种光学元件，例如用于图象显示装置的背投式屏幕（1），包括至少两个基本为刚性各具第一主表面（21；31）和第二主表面（22，32）的板部件（2；3），分别提供顺序穿过光线（10）的入射面和出射面，第一板部件（2）和第二板部件（3）在其各个主表面（31，32）上分别包含一个菲涅耳透镜（24）和一个双凸透镜阵列33，35。

In order to study initial stress and ring force transfer between steel plates and concrete in the numerical analysis of RC beam strengthened by bonding steel plates,8 scale-down models of RC beam were manufactured,their loaded whole processes were analyzed by using surface-surface contact analysis method and "birth and death" element method,and a numerical analysis method of strengthening RC beam with initial stress was proposed.

0引言钢板加固钢筋混凝土结构已在国内外受到广泛应用和研究，并且已获得了大量的研究成果，但成果主要来源于室内模型试验。由于受到试验规模的制约，目前所取得的研究成果，特别是试验成果还带有较大的片面性，不能系统地反应其真实的自然规律[1-3]。

Because there exists a high randomness an easier weighted method is used to establish Grid-format data to approximately describe 3-D space topography, 3-D topography is constructed for Grid-format data by using OpenGL technology, and a free transform of the space curved surface is realized, including parallel move, zoom, circumgyrate. Simultaneously, an algorithm of random incision of 3-D space curved surface containing most six sides is provided, in comhination of geologic evolution, element.

由于存在很大的随机性，采用较为简单的加权方法来建立规则网格Grid格式数据体对三维空间地形进行近似描述，利用OpenGL技术构造Grid数据体三维地形，并对构造出的三维空间曲面进行平移、缩放、旋转等自由变换，提供最多6个切面对三维空间曲面进行任意切割的算法，结合地质演化需要，利用双缓存技术实现了地质要素三维曲面动态演化过程。

Objective: In this paper, we analyzed the leaf surface structure of Salvia selarea L and the element categories and content in the surface microzone of the leaves.

目的：对药用植物和香料植物香紫苏叶片表面结构进行观察，同时对叶片表面的元素种类和含量进行分析。

One of the tubular elements (11, 12) comprises an unthreaded lip (38; 5) extending between its thread and its free end and having a sealing surface (40; 7) in sealed contact with the opposite surface (41; 8) of the other element after the first and second tubular elements have been screwed, have expanded and generated elastic return forces.

其中二个管形零件(11；12)包括一个延伸在它的螺纹部分和它的自由端之间并且具有一个密封表面(40；7)的无螺纹凸缘(38；5)，这个密封表面(40；7)在旋拧、直径膨胀以及然后产生第一和第二管形零件的弹性恢复力后与另一个零件的相对表面(41；8)密封接触。

They are widely used in the fields such as catalysis, catalytic supports, selective sorbent, molecular screen, film, electrochemistry, optical element, zymic counterfeit and dyestuff base materials for their good properties of large BET surface area, porosity and large surface activity.

它具有大比表面积、多孔和高表面活性等性能，在催化剂及催化剂载体、选择吸附剂、分子筛、膜、电化学、光学元件、酶仿制品和染料基质等领域显示出广阔的应用潜力。

Without considering surface covering layer, the surface earthquake dislocation and strain distribution near active fault were calculated under different conditions of magnitude, fault movement style and fault dip angle using 3-D finite element method. Based on above results, the safe distance of active fault to important project site was studied.

：在不考虑地表覆盖层的情况下，采用三维有限元方法计算了不同震级、不同断层活动方式以及不同断层倾角下断层上、下盘地表的地震位移及形变分布，通过设定的安全距离判定标准，研究了各种情况下工程场地距断层的安全距离。

The preliminary results show that the technique can not only in voke fast heating and rapid cooling proceses inside surface lagers of the samples, but also implant the required element into the material surface.

试验结果表明，该技术能使材料表面产生快速加热和快速冷却，并能把所需要的元素注入材料表面，在材料表层有新的氮、碳化合物相产生。

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。