实体迁移技术有利于改善大规模分布式仿真系统的性能，其中迁移期间的时间同步是其关键与难点。
Migrating entities are beneficial to improve performance of large-scale distributed simulation systems, while time synchronization during migration is the key and difficult issue.
如何有效利用物理上分布的计算机网络资源实现大规模分布式仿真一直是系统仿真领域的一个重要问题。
It is an important problem in system simulation field that how to realize large-scale, distributed simulation by utilizing distributed computer network resources effectively.
潜艇分布式作战仿真系统是为作战系统开发、调试及验证提供较真实作战环境的大规模仿真系统。
Submarine distributed combat simulation system is a type of large scale system, which providing near real combat environment for the development, debugging and validation of combat system.
最后，设计了一个基于HLA的仿真实验，对所实现的分布式数据收集系统进行应用测试，并通过与集中式数据收集系统的测试结果对比证明了该数据收集系统在大规模仿真中的优势。
Finally, the distributed DC system designed was tested by applying it to an HLA-based simulation, and the advantages of it were illustrated based on its comparison of centralized DC.
最后，设计了一个基于HLA的仿真实验，对所实现的分布式数据收集系统进行应用测试，并通过与集中式数据收集系统的测试结果对比证明了该数据收集系统在大规模仿真中的优势。
Finally, the distributed DC system designed was tested by applying it to an HLA-based simulation, and the advantages of it were illustrated based on its comparison of centralized DC.
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