建立二叉树，层序、先序遍历（ 用递归或非递归的方法都可以-establish binary tree, sequence, the preorder (with the recursive and non - recursive method can be

在基于对等网的网格环境中，应用本体来描述资源元数据已经成为当今研究的趋势。不同结点可能采用不 同的本体柬描述各自管理的资源元数据-Based on peer-to-peer grid environment, the application ontology to describe resource metadata has become the trend of the present study. Different nodes may use With the body Jian

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