查询词典 terrain

This paper studys the terrain following for low penetration aircraft ,and establishes the model of ALCM's clobber probability based on the Butterworth terrain model . It simulates much of the computation of its clobber probability under typical cruise conditions and analyzes those simulation results deeply. The control system is designed based on the lobber probability simulation result,and the reasonable control data are given.According to those research,the digital terrain following simulations are given .

文中研究飞行器低空突防的地形跟随问题，基于布特沃斯地形模型，建立了飞行器撞地概率仿真模型，在各典型巡航条件下进行了大量的撞地概率仿真计算，并对仿真结果进行了深入地统计分析和研究，在此基础上，设计了相应的控制系统并确定了合理的控制参数，对飞行器地形跟随进行了飞行仿真。

The high-grade metamorphic terrain of Hengshan located at the hinderland of North China Carton in northern part of Shanxi province, China, is a middle-lower crustal transition area of the typical continental crustal profiles of the Wutaishan—Hengshan—Datong—Jining of the early Precambrian etamorphic terrain in China.The Hengshan gneisses of the amphibolite—granulite facieses metamorphic terrain consist of the TTG gneisses and the horizontal adding mantle materials. The Supracrustal rocks in this area are composed of the mafic volcanic rocks and sedimentary rocks. The plenty of granitoid magma activities are the result of anatexes.

中文题名恒山中深变质岩区构造样式副题名外文题名 Tectonic styles of the high-grade metamorphic terrain of Hengshan 论文作者苗培森导师宋鸿林教授学科专业构造地质学研究领域\研究方向学位级别博士学位授予单位中国地质大学学位授予日期2001 论文页码总数88页关键词中深变质岩区构造地质恒山区域构造地质馆藏号BSLW /2003 /P548 /4 位于华北克拉通近中部的恒山中深变质岩区，亦即恒山高级变质岩区，是从五台山—恒山—大同—内蒙集宁这一浅变质岩区至中深变质岩区的我国早前寒武纪典型大陆地壳剖面代表中下地壳过渡带的地区。

Formosa Strait Terrain is a nearly 100% terrain, what means, that the distances are not cut down to 60% as in the GermanyCE standard terrain.Certain differences are caused by warp while converting GOTOPO30 satellite height data into WOE format.

福尔摩沙两岸的地形是一个接近100 ％的地形，什么样的方法，即距离不是降低至60 ％，作为在该germanyce标准terrain.certain差异所造成的偏差，而转换gotopo30卫星高度数据转化为悲哀的格式。

Compared with some different denotations of digital terrain , the advantage of terrain modeling using regular reseau is better than using anomalistic trigonal reseaus.

论文通过对几种不同的数字地形表示的对比，说明了规则格网的地形建模比不规则三角网的地形建模在本系统中应用的优越性。

Digital Terrain Model is digital expression of geologic surface attributively information, it is also digital description with spatial location and terrain properties features.

数字地形模型是地形表面形态属性信息的数字表达，是带有空间位置特征和地形属性特征的数字描述。

Terrain correction is needed when we do research on the internal structure of the Earth, the Lunar, and Mars by use of satellite gravity measurements, then calculate global Bouguer gravity anomalies. It is effective to carry out terrain correction in spherical coordinates.

利用卫星重力测量资料研究地球、月球与火星等星体的内部构造时，需要进行重力地形校正，计算全球布格重力异常，而在球坐标中实现地形校正计算是一种有效的途径。

On the basis of the properties of central projection and orthographic projection, the differences of different rectification approaches based on orthographic projection are explained, and it is suggested that oblique-plane-rectified photograph can produce orthographic representation of flat terrain cover; differential rectification of RS imagery based on DEM can produce orthographic representation of waved terrain cover; and true orthographic rectification based on digital ground-object model can produce orthographic representation of single objects on ground.

根据中心投影和正射投影的特点，从理论上说明了不同正射投影纠正方法之间存在的差异，认为：基于透视变换的像片倾斜纠正可生成水平地表覆被的正射投影表达；基于DEM的正射影像微分纠正可生成起伏地表覆被的正射投影表达；基于数字地物模型的真正射纠正可生成独立地物的正射投影表达。

Experimental results on real terrain data show that the algorithm based on one DAG improves the computing performance of an extraction of terrain.

实验表明，基于DAG表示的地形抽取算法利用变化数据间的空间关系提高了计算性能。

In this paper, some techniques in Virtual Reality, such as LOD Technique of 3-dimension terrain, frustum culling of 3-dimension terrain, levels of detail model, particles, dynamic texture and bump texture, were deeply researched, and some algorithms and methods are proposed by author. At the same time, some original problems, for example the analysis of rooms irradiation, the alarm of emergencies, quick drawing performed by display card and frustum-culling of models, are also involved in the research.

本课题对虚拟现实中的一些技术如：地形LOD技术、地形的视域裁减技术、多层次细节模型、粒子系统、动态纹理和凹凸纹理等进行了较深入的研究，提出了一些独特的算法和解决方案，并且讨论了建筑物房间的着光分析、绘制场景的硬件加速和景物的视见体裁减等一些较新颖的问题。

The task selects the up to the minute mesoscale numerical model as our forecasting model and use thrice fixed nesting and terrain datum of down to dale (highest precision data of 30s) as our terrain datum in the endothecium.

本文选择了当今最为先进的中尺度数值模式MM5V3作为数值预报模式，采用三层固定网格嵌套，选用其最新提供的30S高精度资料作为内层重点考察小区的地形资料。

The circulation, consumption and reproduction of the trilogy have not only testified to its historical significance and literariness, but also invested it with new meanings.

该三部曲的流通、消费与再生产不仅验证了其历史意义及文学性，而切还赋予它以新的意义。

If he thought that he could buy me off, he would be wrong.

如果他认为他可以收买我，那他就大错特错了。