查询词典 dimensional equation

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。

The nonlinear stability of three-dimensional disturbances for the Blasius boundary layers is studied. We adopted here the high accuracy method of using the expansions in orthogonal functions along the normal direction and the effective algebraic mapping to deal with the problem in the infinite region. The initial solutions of two-dimensional harmonic waves are given by Landau expansion, and the mean-flow-distortion is calculated by the approximation equation.

运用Landau展开给出了二维谐波的初始解、通过求解线性PSE而得到TS波和C型亚谐扰动的初始站值、以及近似地模拟初始站的均流变形值，以此为初始条件，并结合迭代-预估校正方法来实现非线性PSE的求解和推进，详细地研究了非平行边界层三维扰动C型失稳过程。

In this paper,from the global viewpoint we first define the nonlinear control system on a two dimensional surface in the three dimensional Euclidean space, give the represwentation of the state equation under a loca coordinate sysgtem of the surface, and study the connectin between the equilibrium state of the nonlinear system and the egodesics on the surface.

我们首先从整体化的观点定义了一种建立在三维欧氏空间的二维曲面上的非线性控制系统，并给出了在曲面的局部坐标系下非线性系统状态方程的表达式，研究了非线性系统的平衡态与曲面的测地线之间的关系。

Aquatic or marsh-growing fern allies; known to have existed since the Cenozoic; sometimes included in Lycopodiales.

生活于水中或湿地的蕨类；从新生代生存至今；有时归于石松目之中。

The engine was uprated from a 90hp Franklin to a 125hp Lycoming.

改良过的引擎是从90hp到125hp莱康明富兰克林。