查询词典 numerical

With the wide application of computer, numerical analysis for the stability of underground cavern has played a more and more important role.

随着计算机的广泛使用，数值方法在解决地下洞室围岩稳定问题中越来越发挥着重要的作用。

Numerical simulations indicate that, for specific coupling coefficient and cavity length value, the DFB lasers; are more sensitive to optical feedback than the Fabry-Perot semiconductor laser.

从分析的结果中可以得出，满足一定参数条件的分布反馈激光器比一般的F-P腔的半导体激光器对外部光反馈更加敏感。

The influence on absorption coefficient brought from shape choice with cylindrical or cone-shaped cavity, square or hexagonal profile, from different closure as air or water, from different material properties and structure sizes, are analyzed based on the numerical calculations. Some general characteristics are summarized. It shows that lowest resonance frequency of sound absorbent coefficient is inversely proportional to volume of cavity and sound absorbent coefficient is proportional to perforated percentage.

2通过数值方法研究了吸声结构内腔为圆柱腔和圆锥腔、基材的剖面形状为正四边形和正六边形、不同背衬、基材材料特性、尺寸大小对整体吸声效果的影响，总结了这些情况下非旋转对称吸声结构的声学特性变化规律，得出腔体体积越大，吸声系数最低共振频率越低；穿孔率越大，吸声系数越大的结论。

In order to improve the operation frequency, the self-suck resonator pulse detonation engine was founded, the ignition principle of the new engine use the method of shock focus autooscillation, so, it possess high ignition and operation frequency, many experts have taken experiment and numerical simulation. However, the physical processes in the resonator cavity are very complicate,the reliable theory haven't set up by now, require the further study.

为了提高脉冲爆震发动机的工作频率，自吸气共振型脉冲爆震发动机模型被提出，该新型发动机点火原理采用激波谐振聚焦点火方式，具有很高的点火及工作频率，许多专家对此进行了实验研究和数值模拟，但由于谐振腔内的物理过程非常复杂，到目前为止没有一套可靠的理论，有待于进一步研究。

Celestial mechanics: numerical method, N-body simulation; planetary systems: Solar System

天体力学：数值算法，N体模拟；行星系统：太阳系

Since the 19th century, classical celestial mechanics system and the formation of planets and the moon Sports theory has become a complete theory of .19 century to the 20th century, 50 years is the period of modern celestial mechanics, improved analytical methods, additional qualitative methods and numerical methods .50 years after the study of celestial mechanics celestial object from the solar system be extended to man-made objects Movement Theory, as well as a few star systems, broadening the field of study.

此后到19世纪末，经典天体力学体系形成，大行星和月球运动理论已成为完善的理论。19世纪末到20世纪50年代是近代天体力学时期，改进了分析方法，新增加了定性方法和数值方法。50年代以后，天体力学的研究对象从太阳系天体扩展到人造天体运动理论以及为数不多的恒星系统，拓宽了研究领域。

The method of inverting flat plate thermal storage cell was proposed to improve the melting and heat transfer rate,and the heat transfer enhancement simulated by numerical method.

为了提高板式相变储能单元的融化传热速率，提出了在相变材料融化过程的适当阶段翻转储能单元以起到传热强化作用的方法，并采用数值法对该方法的传热强化效果进行了分析。

The reproduction theory of cell model for color ink jet ptinting is established, and the numerical calculation is carried out.

建立了彩色喷墨打印的色彩再现模型，并进行了数值计算。

In this thesis, by using theoretical analysis and numerical simulation, we study the characteristics of phase transition of cellular automaton models and the application of traffic flow hydrodynamic model to solve the traffic jam problems.

本文针对交通拥堵问题，通过理论分析和数值模拟，对交通流元胞自动机模型的相变特性和交通流流体力学模型的应用进行了研究。

Seawater intrusion mechanism and its 3D numerical simulation are further explored and researched in this paper. On the basis of the classical theory of fluid mechanics, it built the ideal model of seawater intrusion, and attained the speed in flow field which gradually decreased along with the increasing distance of curvature center along the principal normal in the course of seawater intrusion.

以流体力学经典理论为基础，建立了海水入侵内陆的理想模型，得到在海水入侵内陆的过程中沿弯曲流线的主法线方向，流场中速度随着距曲率中心距离的增大而逐渐减小，根据流线上的速度分布，并可表示出流场中的流线方程，可确定一定条件下海水入侵内陆的速度和方向。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。