二维的

Central South University, Changsha 410075, China）Abstract: Based on 2D steady and incompressible Navier-Stokes equation and k-ε turbulent model,the lateral aerodynamic performances of four types of car, i.e. passenger car, gondola car, boxcar and tank car were analyzed and compared by finite volume method, when these cars were in the cross winds of the same velocity and on the railway with the embankment of the same height.

摘 要：根据二维定常不可压缩Navier-Stokes方程和k-ε双方程紊流模型，采用有限体积法对客车、敞车、棚车和罐车4种不同外形铁路车辆在路堤高度、横风风速相同条件下的横向气动性能进行分析与比较。

The graphic method is a general way of realizing the two dimen...

图形法比较普遍地解决了二维拓扑路径规划算法的实现问题。

The conventional gray scale ultrasound examination is of great significance in the early detection of breast tumors.

常规二维超声结合彩色多普勒超声检查对乳腺肿瘤的早期检出具有重要价值。

An all-optical half adder based on two different cross structures in two-dimensional photonic crystals was proposed. One cross structure contains nonlinear materials and functions as an "AND" logic gate.

提出了基于两种二维光子晶体"十字"逻辑门的全光半加器，其中一种"十字"结构含有非线性介质，起"与"作用，另一"十字"结构不含非线性介质，起"异或"作用。

It is fou nd that in two dimensional case the wave-packet propagates downstream in the we dge-shape,the angle of the half wedge is 10° which is in good consistence with the experiment data.

发现点源波包在二维边界层中呈楔形向下游传播，其横向偏角为10°，与相关的试验图片相吻合。

Parameter Estimation and the applications in handwriting character recognition of 2-D stationary HMMs were discussed in this paper.

本文讨论了二维平稳隐马氏模型参数估计及其在文字识别中的应用。

In this paper, heterotrophic index of Hanjiang River and water system of Changde City was analysed using fractal theory.

对常德和汉江的异养性指数进行了分形分析，表明异养性指数在二维空间分布具有自相似性。

In Japan the fetishistic love for two-dimensional characters is enough of a phenomenon to have earned its own slang word, moe , homonymous with the Japanese words for "burning" or "budding."

在日本，对于二维美少女的狂热现象如此之盛，这足够为它自己博得一个美称：即"萌"，在日文中和"燃烧"、"萌芽"同义。

A two-dimensional position fix that includes only horizontal coordinates.

二维定位模式，只有平面的座标。

As an example, the system designing methods in the development of curve-linear recoil howiter and two-dimension recoil howitzer are introduced in this dissertation.

作为应用实例，本文还介绍了曲线后坐和二维后坐火炮研制的总体设计实践。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。