The key technology is LOD algorithm. I use the view-dependent and terrain's roughness to determine the terrain detail. Before render the terrain.
本文的关键是LOD算法，我使用了视点相关以及和地形本身起伏程度相关的技术来决定地形应有的细节程度。
Image matching is the key stage for digital Terrain Model (DTM) automatical aquisition using with digital images.
利用数字影像自动提取数字地形模型(dtm)的关键是影像匹配。
Terrain match algorithm is one of the key technologies in seabed terrain aided navigation system (STAN).
地形匹配算法是海底地形辅助导航系统的关键技术之一。
Terrain defilade is a key factor for early warning system (EWS) in detecting low altitude targets, effective algorithm provides the foundation of operational simulation.
地形遮蔽是影响预警探测系统发现目标能力的关键因素。有效算法是实施模拟仿真的基础。
The key to success is to use the energy carefully, flying only when necessary and letting the craft roll freely when possible in order to take advantage of the terrain structure.
成功是小心地使用能源的关键，飞的只有当必需的时候而且让飞机自由地卷当可能的在次序利用地带结构。
The key technique of the technical scheme for electronic sand table, such as data processing, terrain modeling, feature matching, is introduced in details in this paper.
然后提出并实现面向土地利用规划的电子沙盘制作的技术方案，详细介绍了数据处理、地形模拟与要素匹配等关键技术。
Road surface model is basis of highway three dimension design, the key is the overlaid compute of design model and terrain model.
公路三维表面模型是公路三维设计的基础，其关键是设计模型和地表模型的叠加运算。
It is the basic model for various GIS operations, and the key data for terrain correlation matching of cruise missiles as well.
它是生成三维立体地貌，计算地面距离、坡度、土方、面表积等的基础数据模型，也是巡航飞行器地形相关匹配的基础数据。
Due to difficult terrain, known as "two lock and key unparalleled in Beijing, the Great Wall the first hurdle," said.
因地势险要，素有“两京锁钥无双地，万里长城第一关”之称。
Walkthrough in massive terrain and image data is a key technology and a difficult problem of GIS, VR and Digital Earth, etc.
海量地形影像数据的快速浏览是GIS、虚拟现实、数字地球等领域应用的关键技术与难点之一。
The rendering of 3D terrain scene is playing a key role in many research fields such as virtual reality, geographic information system and simulation system, etc.
三维地形场景实时绘制在虚拟现实、地理信息系统、仿真系统等领域中占有十分重要的地位。
Dongshan coal mine is the key coal mine enterprise in ShanXi province, and the region there has complex terrain, which is a typical mountainous mining.
东山煤矿是山西省地方骨干煤炭企业，其所在区域地形复杂，属典型的山区开采。
Complex terrain of network design, dust source points sealed design and the choice of devices, mobile sources dust-dust control and grass control are the key link.
复杂地形的管网设计，尘源点的密封装置的设计和选用，移动尘源的粉尘扩散控制以及二次扬尘的控制是整个工程中的重点和难点。
The mountain terrain around it helped concentrate Chongqing's murky air, he said, "but pollution from heavy industries was the key."
重庆因为是被群山环绕，而这种地形则会使得空气集中，他说：“但是重工业的污染是关键。”
An optional air suspension system allows varying ride heights, a key to the Grand Cherokee's amazing all-terrain versatility.
空气悬挂系统是全新大切拥有令人惊异的全路况表现的关键。
Good physical conditioning is necessary to push one through the tough terrain, but accurate navigation skills are key to finding controls and minimizing the distance traveled.
好物理调节是必要的通过坚韧的地面推一个，但是精确航行技巧对发现控制并且最小化距离关键旅行。
The kernel of this paper is to discuss the key technology of publication and interactive browsing for massive terrain data.
完成了系统中语音数据和海量地图数据的存储、地图显示的优化、语音同步播报、后台通信服务等关键技术。
The key techniques of the rendering of vector data over 3d terrain based on stencil shadow volume algorithm are detailed and the effectiveness of this method is test-proven.
详细论述了基于模板阴影体算法矢量数据绘制的关键技术，并通过试验验证了该方法的有效性。
The key techniques of the rendering of vector data over 3d terrain based on stencil shadow volume algorithm are detailed and the effectiveness of this method is test-proven.
详细论述了基于模板阴影体算法矢量数据绘制的关键技术，并通过试验验证了该方法的有效性。
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