地形

The method reconstitutes the triangles in different multi-resolution transition region and optimizes the quadtree vertex error estimation and geometry smooth transition algorithm with the scheme based on the characteristics of higher distance to ground and bigger downwards angle of visibility in flight simulation. The render speed of computer is enhanced while ensuring the veracity condition of the terrain.

该方法将不同分辨率过渡区域的地形进行重新构网，并针对飞行仿真距离地面较高、下视角较大的特点对四叉树顶点误差估计和几何光滑过渡算法进行优化，在保证地形准确性的范围内提高计算机实时处理速度。

By controlling the frequency and amplitude of Perlin noise and superposing more noise value, we can get diversified terrain with the complex work of manual geometry modeling avoided.

引入Perlin噪声作为地形高度生成器的基本模型，通过控制噪声的幅度和频率以及噪声叠加，可以生成形态各异的地形。

So it is important and essential to further investigate the generation of internal tides and the propagation of internal waves over bottom topographies.

本文在二维线性理论框架下研究了内波在若干地形上的传播特征以及这些地形上内潮的产生。

In this paper, the fundamental theories and methods of terrain modeling, including regular square grid and triangulated irregular network, are studied.

本文研究了地形建模的基本理论与方法，包括规则格网和不规则三角网的地形建模。

The contour map is the easiest to distinguish the height of the terrain. According to the study, it demonstrated that the contour map has to be understudied by learning.But there have not suitable teaching materials to supply learning. However, the conventional map is restricted on the paper; the real world must be displayed by usingthe two-dimension. From this research, using the olography in order to get observe the terrain of stereoscopic vision and analyze the geology.

中文摘要等高线地图是最易判别地形高低的地图，但相关研究中显示等高线图必须经由学习才能看的懂且并无适当的教学媒材及设备供学习，而早期传统的地图受限於纸上，必须将真实的世界以二维的方式来展示，现在如果透过全像立体影像的技术，便可将一般平面影像制作成三维立体影像，以便於做地形的立体观察及地质判释。

The numerical results shows that the positions oftroughs and ridges in the westerlies are well in agreement with the obser-vation,but there is discrepancy in intensity.

用西藏高原和洛矶山的实际地形作了数值计算，计算结果表明，地形扰动可以解释西风带平均槽脊的位置，但扰动的强度与实况有一些出入。

Seabed mineral resources—cobalt crust comes mainly from rugged terrain of the seamount surface, the track vehicle used for mining cobalt crust should have an excellent barrier properties, mechanical performance and heavy-duty capacity.

海底矿产资源钴结壳主要产于地形崎岖不平的海山表面，用于开采钴结壳的履带式作业车应能稳定地通过复杂地形，具有优良的越障性能、机动性能和重载能力。

Discuss the key arithmetic of surface correction and line correction in correct the DEM Gross Error of the different geography appearance such as water area, hill area and Loess Gully area.4. Bring forward the conception of keep the terrain feature of DEM Edit, and pointer solves two key technologies: The DEM data 3D fluency explores and quick pick up.

提出了保持DEM地形特征编辑的概念，并重点解决了地形特征编辑中的两个关键技术：DEM数据的快速显示和空间三维数据的快速选取和反馈，并实现三维环境下实时的人机交互操作。

The article incorporates Huygens principle with existing fire behavior models of surface fire spread,crown fire spread,fire acceleration,builds forest fire simulation models which fit to Anning s terrain,and develops related dynamic modules for Yunnan Province.

利用惠更斯原理进行林火蔓延模拟，结合国际上成熟的林火行为模型(Rothermel的地表火模型，Van Wagner的树冠火蔓延模型，McAlpine的林火加速模型)，建立适合云南省特殊地形的林火蔓延动态模型，并开发相应的动态模拟模块，在云南特殊地形地貌上的林火蔓延模拟做出一定探索。

Introduces the height finding theory of the continuous wave frequency modulation altimeter and the pulse radar altimeter,analyzes the reason why the two kinds of altimeters were used in complex terrain to cause errors,and also gives out the experiment result that the plane mounted with the two kinds of altimeters flew in complex terrain section occasion.

介绍了调频连续波高度表和脉冲雷达高度表的测高原理，分析了两种体制高度表在复杂地形下使用时产生误差的原因，并且给出了两种高度表在复杂地形剖面场合下的机载试验结果。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。