所有技术文件，技术资料及技术图纸的分类，编号归档工作。

Technical paper classification of all technical documents and files, number and place on file.

youdao

所有技术文件，技术资料及技术图纸的分类，编号归档工作。

Technical paper classification of all technical documents and files, number and place on file.

youdao