查询词典 finite dimensional

The contents of this dissertation are as follows:(1). Mathematical models of zero-dimensional, quasi three-dimensional and full three-dimensional in flow path of turbo engine are provided.

本文主要包括如下内容：(1)针对涡轮发动机通流部分的仿真分别给出了零维、准三维和全三维数学模型。

The ionic liquids have been widely used in the preparation of zero-dimensional nanomaterials,one-dimensional nanomatefials and two-dimensional nanomaterials until now.

离子液体在纳米材料制备方面具有很多优势，为纳米材料的制备开辟了一条新的途径。

With the development of molecular-beam epitaxy and microfabrication techniques, people can arrange the atoms and moleculars at will and make various zero-dimensional, one-dimensional and two-dimensional systems even single molecular devices.

随着分子束外延等超薄生长技术和精细束加工技术的不断发展和完善，使人们能够按照自己的意愿排列原子、分子，制备出各种各样的零维、一维和二维纳米结构，甚至单分子器件。

Experimental results show that the 3D SPEZBC algorithm has the same rate-distortion performances of three-dimensional embedded zero block coding (3D EZBC) algorithm, obviously outperforms three-dimensional set partitioned embedded block (3D SPECK) algorithm, three-dimensional set partitioning in hierarchical trees(3D SPIHT) algorithm and (AT-3D SPIHT) algorithm, and is slightly better than JPEG2000 multi-component (JPEG2000-MC) algorithm at different bit rate in the compression performances.

实验结果表明，3D SPEZBC算法具有与三维嵌入式零块编码(3D EZBC)算法相同的压缩编码性能，在各比特率下编码性能均明显优于三维集合分裂嵌入式块编码(3D SPECK)、三维等级树集合分裂(3D SPIHT)和非对称三维等级树集合分裂(AT-3D SPIHT)算法，并且略好于多分量JPEG2000编码(JPEG2000-MC)算法。

Elementary nature of one dimensional time , 2 dimensional times and negative 2 dimensional times are expounded in self-explained and verified way .

文章对一维时间，二维时间和负二维时间的基本物理属性给出了论述和论证。

By taking the strategy of uniting geometry with algebra and using the method of minimal value, the relationships of intersection, parallels and perpendicular between two three dimensional spaces in four-dimensional descriptive geometry are investigated and the calculation formula of the distance between two three-dimensional spaces are given.

用形数结合的观点和条件极值法，研究了四维空间的两三维空间的相交、平行和垂直的相互关系计算出两平行三维空间的距离。

Three-dimensional Geologic Spatial Information System is a three-dimensional system, it uses three-dimensional spatial model to represent the geoscientific spatial information.

本论文分为两个部分：三维地质空间信息系统总体设计和三维可视化研究。

To "customer first, honesty first" business philosophy, dedicated to customers design, manufacture their own products; First, the development of categories of products 1, Xianglong auspicious screen (the two major series, more than 20 varieties) 2, Fukurokuju Liuzhou screen Jubilee Series 3, precise degree of corrosion of copper gold stationery series (more than 10 varieties) Second, the product type ordered 1, pure gold, silver, gold-plated, silver medal 2, Gold, paperweights, gold plate, bookmarks, badges, etc. 3, flat, three-dimensional gold leaf products Third, wholesale Product category 1, three-dimensional gold leaf painting series (more than 50 varieties) 2, Crystal Glass 3, three-dimensional gold leaf Bonsai series (more than 10 varieties) Our company insist on "reputation first, reasonably priced, high quality, fast," the operating principle of expanding the market scope of business, at the same time the company will also continue to provide customers more, better and more satisfied with the products, with you to create better at the end of the past, thus forming "Qin Xuan-style" boutique line.

以&顾客至上、诚信为先&的经营理念，全心为客户设计、制造各具特色的产品；一、精品开发类 1、祥龙吉日屏风（两大系列，二十多个品种） 2、福禄寿禧龙屏系列 3、精蚀铜度金文具系列二、产品订制类 1、纯金、银币、镀金、银纪念章 2、金卡、纸镇、金碟、书签、徽章等 3、平面、立体金箔类产品三、产品批发类 1、立体金箔画系列 2、水晶琉璃 3、金箔立体盆景系列本公司坚持&信誉第一、价格合理、高品质、快速度&的经营方针，不断扩大市场业务范围，同时公司也将不断为客户推出更多、更好、更满意的精品，与您共同缔造美好末来，从而形成&琴轩式&的精品路线。

Using fluid dynamics FEM (two dimensional, three dimensional andaxisymmetric) and three dimensional acoustic FEM in meticulous analysis ofexpansion muffler structure, this paper studies the influences of each mufflercomponents' position, dimension, form and quantity on the fluid dynamic andacoustic performances;therefore the paper indicates that the end of the intruding tubeis the linchpin of the fluid dynamic performance of the whole muffler structure, thespringhead of muffler fluid dynamic performance is the smoothness of air current, themain factor which affects the acoustic attenuation value of expansion chamber muffleris the grade of saltation of the section of air conducting access, and the attenuationvalue of specific frequency can be dramatically enhanced by carefully designing thelength of expansion chamber.

本文通过流体力学有限元方法和三维声学有限元方法对扩张腔消声结构的参数化模型进行了细致的分析，研究了这种结构的各个组成部份的位置、大小、形状和数量对其流体力学与声学性能的影响，指出插入管端口是影响整个结构流体力学性能的关键，消声结构流体力学性能的根源是气流通过时的平稳程度；影响扩张腔消声量的主要因素为声波传播通路截面突变的程度，并可以通过精细的设计扩张腔轴向长度获得宽频或指定频率消声量的大幅度提高。

Suppose G is a finite group, then QG is a semisimple Q-algera, obviously ZG is a Z-order of QG,we denote the maximal Z-order by ?.If G is not abelian, it is not an easy thing to determine г; if G is an abelian group, then QG is isomorphic to the direct sum of a finite number of number fields, and r is the direct sum of these rings of algebraic integers of those number fields, but which elements of QG belong to r is not clear.

设G是一个有限群，那么QG是一个半单代数，ZG是QG的一个Z-序，设Γ是QG的一个极大Z-序，当G是一个非交换群时，Γ的求解是困难的问题；当G是一个交换群时，QG同构于有限多个数域的直和，Γ相应的就是各数域代数整数环的直和，但Γ具体是QG中那些元素不清楚。

Consumer preference ; fuzzy partial ordering relation ; condorect function

消费者偏好；模糊偏序关系； condorect函数

And she doesn't have a cat, she has a Mexican hairless.

而且她不养猫，她养了一只墨西哥无毛犬。