说明：  详细介绍了Leach协议与NS的关系、算法设计思想、簇头建立算法流程图、协议的难点解决、算法运行结果分析等方面的东西！
(Leach agreement detailing the relationship with the NS, algorithm design, algorithm flow chart of the establishment of cluster head, the agreement to resolve the difficulty, algorithm analysis, the results of things!)