修改已经检索和尚未检索的木材特征代码；
Modifying wood character codes and species names before and after searching.
该方法可以克服病毒特征代码扫描法不能识别未知病毒的缺点。
It could overcome the shortage of normal virus scanner-which could not detect unknown virus.
应用成组技术对冷冲模凸模的特征进行了分析，采用特征代码设计了其零件分类编码系统。
The feature of convex-die is analysis by GT technology, and it's classification and coding system is designed by using characteristic code in this article.
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