自己做的演示PPT，用于介绍NS2模拟器的基本知识，并在最后用NS2模拟MTE，LEACH和LEACH-C协议，对他们进行了比较。-Make their own presentation PPT, used to introduce the basics of NS2 simulator, and in the final with the NS2 simulation MTE, LEACH and LEACH-C protocol, they were compared.