阐述了综合环境数据表示和交换规范（SEDRIS）在动态地形中的应用，包括仿真对象模型中的应用和将SEDRIS传输格式（STF）文件作为运行数据库的应用。
The applications of SEDRIS in dynamic terrain are focused, which include usage of SEDRIS in Simulation Object Modeling and using STF as the runtime database.
三维地形是虚拟自然环境中不可缺少的因素，也是虚拟仿真领域中视景系统的重要组成部分。
Three-dimensional terrain is one of important factors of the natural scenes in virtual environment. It is also a significant composition of view system in virtual simulation field.
因此，在作战仿真领域研究三维地形环境的仿真具有重要的学术价值和应用价值。
Therefore, studying the simulation of three-dimensional terrain environment in the field of warfare simulation is highly valuable for academic study and application.
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