中国的列车根据速度可分为不同类别，以不同的字母和编号区分。
According to the speed, Chinese trains are divided into different classes, identified (确认) with different letters and numbers.
通过提供新的可视代码片段类型(包括转换程序和编号)，以及通过在一个类别中提供更多的可视代码片段，对可视代码片段支持进行了改进。
Visual snippets support has been improved by providing new categories of visual snippets, including converter and Numbers; as well as by providing more visual snippets within a category.
比如：存档日期、草稿或版本编号、文件条目鉴定者、卷宗鉴定者、类别代号、登记号、生成者名称等。
Examples: archival date, draft or version number, record item identifier, dossier identifier, class code, registration number, name of creator.
“产品类别”，“典型产品型号”，“元件名称”，“元件编号”。
"Product Category", "Proto Type Product Model", "Part Name", "Part Number".
“产品类别”，“典型产品型号”，“元件名称”，“元件编号”。
"Product Category", "Proto Type Product Model", "Part Name", "Part Number".
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