查询词典 dimensional equation

In Chapter 2, the of two dimensional electron gas in heterostructures and the state density of the low dimensional electron gas are presented.

第二章给出了在异质结中二维电子气的形成过程，以及低维电子气的态密度。

Second,around each of m-dimensional tori of elliptic or mixed type there arehigher-dimensional invariant tori.

第二，环绕在m维椭圆型和混合型环面的周围存在维数更高的不变环面。

This thesis analyzes the energy eigenvalue and of the Harmonic oscillator with a one-dimensional δ-function, makes a comparative study of those of the one-dimensional harmonic oscillator, and analyzes the reason which causes their different quality and the different influences to the eigenvalue of the even parity energy and to the wave function when the number of the "Z" is different.

本文研究了一维δ势场中的谐振子的能量本征值及其本征波函数，并与一维谐振子的能量本征值和波函数进行了比较，分析了它们的性质不同的原因以及取不同势参数Z值时对偶宇称能量本征值和波函数的不同影响。

This software take full advantage of the multimedia technique , especially the three-dimensional animation, to open out the abundant meanings and scientific theories in structural chemistry by using lush graphical interfaces, lifelike animation, lifesome sound effects, alluring exhibitive technique, translate bald contents and nonobjective theories into visual, direct-viewing, lively demonstration, change static and plane teaching method into dynamic and three-dimensional teaching process with attraction and infection, realize visual and enlightened teaching.

本软件充分应用计算机多媒体特别是三维动画制作技术以丰富的图形界面、逼真的视频动画、生动的音响效果、引人入胜的表现手法揭示了结构化学中包括的丰富内涵和科学原理，将原来枯燥的内容和抽象的理论转变为形象、直观、生动的演示，使以前静态的，平面式的教学变为动态的、三维立体的教学过程，具有吸引力和感染力，实现了形象化、启发式教学。

By extending the square map, a one-dimensional generalized square map with exponential factor is constructed, and its corresponding two-dimensional map is obtained via one-order coupled item in this paper.

由平方映射延伸构造出了一类含指数项的广义平方映射，并由一维映射通过一次耦合项得到了二维映射。

By extending the square map,a one-dimensional generalized square map with exponential term is constructed,and its corresponding two-dimensional map is obtained via one-order coupled item in this paper.

由平方映射延伸构造出了一类含指数项的广义平方映射，并由一维映射通过一次耦合项得到了二维映射。

The field solutions are verified by both an analytical two-dimensional algorithm and three-dimensional finite element software. A rapid method is presented for extensile analyzing and optimizing Halbach cylinder magnet.

通过其二维解析解和三维有限元软件验证了本文推导的三维场解，为分析和优化应用日益广泛的Halbach磁体结构提供了一种快速灵活的分析方法。

Secondly, the gun barrel temperature field is solved by two-dimensional and one-dimensional heat conduction model with finite element method and finite difference scheme respectively.

其次通过对身管二维轴对称传热模型和一维径向传热模型的数值计算，研究了身管固壁的传热问题。二维轴对称传热计算采用了有限单元法，一维径向传热计算采用了有限差分法。

The model of three-dimensional temperature field of Arctic sea ice is established, andthe two-dimensional velocity of tidal motion in the horizontal direction is considered,meanwhile a way to determine the boundary is found.

2建立了关于北极海冰温度场的三维模型，考虑了水平方向的二维流速问题，给出了确定开边界条件的方法。

In practice, such systems are simplified as finite dimensional systems, and then treated via existing finite dimensional control theory.

在工程应用中大多采用有限维近似模型，并应用现有的有穷维控制理论进行处理。

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。