main classification number 基本类号
main classification method 主要分类方法
The foundry has been approved by all the main classification companies.
铸造厂已通过所有主要的分类公司。
The main design requirement, in this case, is flexible classification and query support, along with the scalability of the repository itself as well as a user-friendly interface.
在这种情况下，主要设计需求是灵活的分类和查询支持以及存储库本身的可伸缩性及用户友好界面。
Figure 2 illustrates the first classification, which is based on their awareness of the structure of the XML documents. According to this classification, compressors are divided into two main groups.
图2说明了第一种分类，这种分类基于对XML文档结构的感知。
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