中文说明：
蚁群算法在QoS组播路由上的应用。
针对所给的路由网络，运用蚁群算法求出满足QoS约束的最小代价组播树
English Description：
The application of ant colony algorithm on QoS multicast routing. For the given routing network, ant colony algorithm is applied to find the minimum cost multicast tree satisfying QoS constraints.