水电建设项目工程档案的分类方案与档号编制，是工程文件归档整理、组卷的关键问题之一。

For hydropower construction projects, achieves classification and number preparation is a critical issue in sorting-out and voluming of project documents.

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这句话我理解是说把档案号和每个申请人的名字写在信封上。

Write down the file number and the individual's name on the envelope.

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