题目：基于OPNET仿真建模方法研究.nh 内容：以OPNET为工具，深入地讨论了仿真建模技术，重点是网络协议的建模方法以及如何实现。-Title: OPNET-based simulation modeling method. Nh content: to OPNET as a tool, in-depth discussion of the simulation modeling technology, with a focus on network protocols of the m