For each author found, the code then has to search back up the tree for all the book elements with that particular author name embedded in them.

对于发现的每个作者，代码必须接着反过来到树上全面搜索以获取嵌入特定作者姓名的所有书籍元素。

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So an efficient search method by using populating code book are developed, and search procedures for determining the minimum mean-square error excitation code word are discussed.

为此研究了一种用繁殖码本作为激励源的有效搜索方法，同时讨论了决定最小均方误差激励码字的全搜索过程。

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