查询词典 planar

These flat-ringed planar compounds intercalate with the cells' nucleic acids .and act as frameshift mutagens and carcinogens.

这些平面扁平环形化合物能插入细胞的核酸中并且充当移码突变剂和致癌剂。

Al-Mg-Sc alloy ; bancake-grain structure ; inverse pole figure ; texture ; planar anisotropy

铝-镁-钪合金；反极图；煎饼状晶粒结构；织构；平面各向异性

It is able to perform spatial transformational movement, rotation, hoisting, tilting, planar rotation and tilted rotation. Based on configuration analysis, kinematic position equations were formulated, kinematic model of parallel fine-tuning structure was discussed as a key and inverse position analysis and velocity mapping equations were presented. Kinematic simulation of the mechanism was conducted using MATLAB software. A case study was provided, which applied the mechanism in tunnel erector assembling manipulators.

通过对该机构进行分析研究，建立其运动学位姿方程，重点探讨了并联微调机构的运动学模型，建立了其位置逆解与速度映射解析方程，运用MATLAB软件对该机构进行了运动学仿真分析；同时提供了该串并联机构应用于隧道管片拼装机械手的具体实例。

In this thesis a number of inverse approachesare presented, related to constructing residual stress field in planar and axisymmetricstructures based on fewer testing data, and extracting the plastic properties of ductilematerials from spherical indentation tests.

本文研究了两种反问题：一是利用较少的实验数据构造平面与轴对称残余应力场；二是利用球形压头压入实验提取延性材料的塑性特性。

The most stable isomer of Si4N4 is a planar structure with 8 Si-N bonds.

Si4N4团簇的最稳定结构是有8个Si-N键的平面结构。

The main difference between the proposed method and the existing methods is that the new one embeds objects into the parametric space of the base surface by isometric or locally isometric mapping using the planar development of the base surface as the intermediate medium, thus the object to be deformed can follow the shape of the base surface homogeneously.

新方法中，变形控制曲面首先以等距或局部等距的方式展开为平面，然后经由平面的线性映射，将待变形物体嵌入控制曲面的参数空间中，从而产生符合控制曲面形状的局部均匀变形。

Parameterizing a 3D mesh means finding an isomorphic mapping between a discrete surface patch and a planar mesh.

三角网格的参数化是指从空间三角网格到参数区域的一个同构映射，参数区域的选择可以是平面区域、球面等。

The authors discuss a special case here, namely the case of plannar isotopy. The main part of this paper gives two algorithms to determine whether two given knot/link diagrams are planar isotopic or not, and also compares them.

本文讨论了一种特殊情形下的得分类，即平面合痕下的等价分类问题，重点介绍了两种判断两个纽结图是否是平面合痕的算法，并对它们进行了比较。

objective to obtain the diffusion tensor maps of the normal human brain,and assess intrinstic properties of water diffusion in quantitative parameters for an anatomic analysis.methods maps of isotropic apparent diffusion coefficient and various anisotropic maps were calculated in60healthy adults from seven diffusion imagings by using single-shot echo-planar diffusion-weighted sequence.brain parenchyma anatomy was analyzed and adciso and various anisotropic index were measured.results （1）diffusion properties of different tissues and anatomic areas of normal adult human brain are different.diffusion in white matter is anisotropic;diffusion in gray matter is isotropic.

目的 获取正常人脑组织扩散张力性图像（diffusion densor imaging，dti），定量分析正常人脑组织水扩散的内在特性，进一步评价脑解剖结构。方法 60例健康正常人，应用单次激发epi-dw序列，计算出adciso图及各向异性图，分析脑实质不同区域的解剖结构，测量adciso（isotropic apparent diffusion coefficient）及各向异性指数。结果（1）脑内不同组织结构弥散特性不同，脑白质弥散表现为各向异性，而脑灰质弥散表现为各向同性。

The stress and strain of materials have mostly been analysed in planar isotropy.

迄今有关材料应力和应变状态的分析多限于面内同性材料。

If you are committed to an education career, then the Master of Arts in Education from Ashford University is for you.

如果你是致力于教育事业，那么，艺术教育硕士学位阿什福德大学是给你的。

objective:to explore the expression of survivin protein and its mrna in rectal cancer and their clinic significance.

目的：研究凋亡抑制因子survivin蛋白及其mrna在直肠癌组织中的表达及其与临床病理关系。