中文摘要：

泛滥的距离是在一个路由协议的设计和评估的一个重要参数，它不仅与在线路发现的延期时间，而且到线路的稳定性和可靠性相关。在这份报纸，为在一个随机的图模型的一个活动特定的网络(MANET ) 的平均泛滥距离(AFD ) 基于动态来源路由(数据设置就绪) 被给协议。AFD 上的空间复用的影响也被学习。与相比在没有空间复用的模型，在有空间复用的模型的 AFD 有许多更小的价值，当在在网络的节点之间的 connetivity 概率是小的时并且当再使用的时间的数字大时。这意味着有空间复用的线路发现是更有效的。

英文摘要：

The flooding distance is an important parameter in the design and evaluation of a routing protocol, which is related not only to the delay time in the route discovery, but also to the stability and reliability of the route. In this paper, the average flooding distance （AFD） for a mobile ad hoc network （MANET） in a random graph model was given based on the dynamic source routing （DSR） protocol. The influence of spatial reuse on the AFD was also studied. Compared with that in the model without the spatial reuse, the AFD in the model with the spatial reuse has much smaller value, when the connetivity probability between nodes in the network is small and when the number of reused times is large. This means that the route discovery with the spatial reuse is much more effective.