Virtual segment also contains dictionary cache, stored procedures cache, and big buffer pools used for writing large block of pages to disk at once.

虚拟内存段还包含字典缓存器，存储过程缓存器，以及在向磁盘一次性写入大块页面时使用到的较大的缓冲池。

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This method build a dictionary library that take the strokes and stroke segment as the index parameters by making use of the stroke segment and chain code character;

该方法借鉴笔段链码特征，建立以笔画一笔段数目作为检索参数的字典库；

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