查询词典 conformal transformation

In this paper, a series of lunar map projection formulas are deduced including azimuthal projections, cylindrical projections and conical projections. The lunar map projections software is compiled. By caculating lunar map projection distortions, their projection distortion rules are found. Base on the lunar exploration mission, the lunar map projection scheme is given in this paper. The azimuthal conformal projection or the circumcenter perspective azimuthal projection is usually used in small areas, especially in two poles. When the whole map of the moon is needed, the azimuthal conformal projection or the circumcenter perspective azimuthal projection is used within 10° in the poles, and the traverse tangent cylindrical conformal projection or the normal secant conical conformal projection can be used in else areas, furthermore, band-division is necessary to reduce the projection distortion.

本文推导了基于月球参考球的各种投影公式，主要包括方位投影、圆柱投影和圆锥投影；编制了月球地图投影计算软件；对多种月球的投影变形进行了详细的计算，总结分析了各种月球投影的变形规律；结合月球探测的需要，给出了月球投影方案的建议：对于局部的面积较小的投影区域，建议使用等角方位投影或外心透视方位投影；如果绘制月面全图，在两极10°范围内采用等角方位投影或外心透视方位投影，其余区域可以采用等角横切圆柱投影和等角正割圆锥投影，并且要进行分带处理。

On the other hand,the conformal deformations problem is to find a metric on H2(-1), conformal to g,with the given function K as its Gaussian curvature ,that is,it is important for us to study the solvability of the conformal Gauss curvature equation in geometry analysis.

e~(2u)g，它的高斯曲率函数K满足共形高斯曲率方程Δ_gu+1+Ke~(2u)=0。另一方面，对H~2(-1)上预先给定的一个函数K，共形形变问题-寻找g的共形度量=e~(2u)g使K是的高斯曲率，即共形高斯曲率方程的可解性研究是几何分析中的一个重要问题。

The errors of conformal plumbic blocks made with automatic cutter are less than the errors of conformal plumbic blocks made with manual cutter, so automatic cutter should be a necessary tool in making conformal plumbic blocks.

自动切割机制成的适形铅挡块误差比手动切割机小，应将其作为制作适形铅挡块的必备工具。

In this paper, the theory and method of polynomials for conformal projection transformation and their application in CAC and in the construction of GIS are systematically discussed. Also introduced is the programme package in BASIC and FORTRAN for conformal projection transformation.

本文系统地讨论了等角投影变换的正形变换多项式的理论、方法及其在计算机制图和地理信息系统建设中的若干应用问题，并同时介绍了《等角投影变换BASIC、FORTRAN程序软件包》的有关内容。

Only with such characteristics, the movement equations can be expressed as matrices, and the idea of transforming the movement equations to the simplest form through a nonlinear transformation can be realized;(2) The form of Zi =Yi + YTH2i Y + Y7H3i Y(2)+ Y(2)T H4i Y(2)+ YTH5i Y(3) is adhibited in the nonlinear transformation, so that the multivalued problem caused by the nonlinear transformation is avoided, and the higher order transformation can be taken next;(3) The fourth order nonlinear transformation matrices H21,H31,H41 and H51 are derived, by which the original movement equations of electric power system is transformed to Jodan form in Z space;(4) By use of the fourth order nonlinear transformation, the approximate expression of the stability boundary is obtained, in Z space it is Z1= 0,in Y space it is Y1 + YTH21 Y + YTH31 Y(2)-i- Y(2) TH41 Y(2)+YTH51 Y(3)= 0;(5) The criterion used in this paper to judge whether the system critical unstable is simple and quick;(6) The method used in this paper is a direct method, and no need to construct an energy function.

正是由 于电力系统的运动方程具有这样的特性，才能写成矩阵的形式，通过非线性变换将电力系统的运动方程变换为最简单的线性形式的思想才能得以实现；（2）将通常运用于电力系统暂态稳定性分析的Normal Form变换的形式由 Yi＝ Zi＋ ZTh2riZ变形为 Zi＝ Yi＋YTH2iY＋YTH3iY（2）＋Y（2）TH4iY（2）＋YTH5iY（3），从而使得在对持续故障轨线实施同样的非线性变换以确定临界切除时间时，避免了非线性变换带来的多值性的问题，而只有在没有多值性问题的困扰下，才能采用较高阶的变换：（3）推导出了将原始电力系统系统的运动方程变换到Z空间的约当形式的非线性变换矩阵H21、H31、H41、HS1：（4）在运用四阶了「线性变换的情况下，给出了受扰动后系统的稳定边界的近似的解析表达，在Z空间为Z1=0，在y空间为： Y1+YTH21Y+YTH31Y(2)+Y(2)TH41Y(2)+YTH51Y(3)=0 （5）确定临界失稳的判据简单、快捷：对于一个复杂的电力系统，其稳定边界是相当复杂的一个高维曲面，即便是已知系统稳定边界的解析表达，要求出系统持续故障轨线何时与这一高维曲面相交，在数学上几乎是不可能实现的。

Schwartz mapped the interior of each fluid cycle in the physical plane into an annulus of unit outer radius in the mapping plane according to the conformal transformation. And the perturbation theory is the main way of solving conformal parameters.

L.W.Schwartz的关于定常二维非线性波算法的主要思想是为了利用已知速度势的解析解，将一个波长的自由表面同底部所限定的流域采用合适的保角变换函数变换为映射平面上一圆环，在求解保角变换函数的变换系数时采用摄动理论进行求解。

Based on these theories, it develops a GIS map projection software using Visual C++ as a platform. The software consists of two parts: analytical ordinal transformation and analytical athwart transformation. Analytical athwart transformation implements map projective transformation with coefficients obtained through numerical method, which is also the main idea of this paper. Map projective transformation process is illustrated with the examples of Mercator projection and conic projection.

地图投影建立了平面上的点(用平面直角坐标或者极坐标表示)和地球表面上的点之间的函数关系，而地理信息系统以平面直角坐标形式通过计算机图形学的方法表示2维或3维地理空间信息，因此，地图投影起到了地球空间与地理信息系统之间的坐标转换的桥梁作用[1]。

The method of Agrobacterium-mediated transformation is the most widely used in genetic transformation. To this day, only several genotypes such as Bobwhite and Yangmai158 have been used in transformation successfully. To widen the recipient genotypes, ten different genotypes were transformated by Agrobacterium-mediated In our study, transformation efficiency of B31706 and B31575 were significantly higher than Bobwhite. Moreover, regeneration rate and resistant plantlet rate of Agrobacterium-mediated genetic transformation in B31706 immature embryos callus was the highest one among the genotypes.

农杆菌介导法是目前应用较为广泛的转化方法之一，但在小麦中，只有包括Bobwhite和扬麦158在内的少数几个基因型被成功用于农杆菌介导的小麦遗传转化中，为了拓宽小麦农杆菌转化的受体基因型范围，本研究对10个不同基因型的材料进行了转化实验。B31706和B31575的转化率明显高于对照材料Bobwhite 。

With the analysis of the framework of MDA and categorization research on all kinds of model transformation methods and languages in existence, analyzing the applications of OCL in MDA considering the characteristic of OCL, three directions is emphatically studied in this paper:First of all, according to the declarative characteristic of OCL, this paper proposes a hybrid model transformation language named Hybrid-OCL by extending OCL from three aspects, the syntax and semantics is also defined. Hybrid-OCL can describe dynamic semantics, store model transformation information in order to support model transformation synchronization, and provides the integrated model transformation program framework.

本文以MDA整体框架为起点，分类研究了现阶段各种模型转换方法和模型转换语言，结合OCL的特性分析了其在MDA框架中的应用，并在此基础上重点研究了以下三方面内容：首先，根据OCL声明式语言的特点，选取三个角度对其进行扩展，从而设计产生了混合式模型转换语言Hybrid-OCL，详细定义了其语法和语义，并通过具体转换实例验证了这种扩展的可行性。

Japan take the Chinese feudalism law as the pattern law system legal framework to the modern Western Europe law pattern transformation, is the Japan legal framework first transformation, after World War II Japan abolishes the Fascist legal regime under the American law influence, through the democratized reform, the revision multitudinous department law, the social economic rules and regulations receives especially takes highly, is the Japan legal framework second transformation, along with the time vicissitude, the original legal framework occurrence"the system is weary", complied with the marketability, the informationization, an advanced age isochronism generation of tidal current, the legal framework has the omni-directional transformation is the Japan legal framework third transformation.

日本以中国封建法律为模式的律令制法律体系向近代西欧法律模式的转变，是日本法律体系的第一次转换，二战后日本在美国法影响下废除法西斯法律制度，通过民主化改革，修改众多部门法，尤其社会经济法受到高度重视，是日本法律体系的第二次转换，随着时代变迁，原有法律体系发生"制度疲劳"，顺应市场化、信息化、高龄化等时代潮流，法律体系发生全方位转变是日本法律体系的第三次转换。

The witness also told the jury at the Royal Courts of Justice in London that he saw a paparazzo fighting with a member of the public who was trying to stop him taking pictures in the minutes before the emergency services arrived.

他还告诉在伦敦皇家法庭的陪审团，在急救服务到来之前，他当时看见一个狗仔队正和一群阻止他拍照的人打架。

The entire N／C program on a tape is made up of an accumulation of these successive data blocks.

纸带上的整个数控程序由这些连续数据单元连接而成。