即先用RSA方法加密密钥矩阵，然后用二叉树的遍历产生的不同密钥数据矩阵对数据进行加密。
First, produce key with RSA and construct a binary tree, then traverse the binary tree to produce new keys. And there must be a certain key to encrypt data with all the other encoding methods.
对二叉树的遍历过程进行深入地研究，提出一种生成二叉树遍历序列的新方法，解决了二叉树遍历序列的生成问题。
By careful researches of the traversal of binary tree, a new method of traversing binary tree is brought forward, which is able to solve the problem of traversal of binary tree.
本文将对满二叉树的结构进行深入分析，采用深度遍历与广度遍历两种途径给出递推关系式。
This paper goes deeply into such tree's structure using both depth search and breadth search, and gives recursive relationship separately.
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