本论文的研究背景是从笔者的工作经历出发，阅读了国内外大量相关文献。在此基础上，笔者直接或间接调查了一些企业单位。

The second is that i read a large number of the related literatures which were published at home and oversea ; the third is that i investigated some companies.

youdao

本论文的研究背景是从笔者的工作经历出发，阅读了国内外大量相关文献。在此基础上，笔者直接或间接调查了一些企业单位。

The second is that i read a large number of the related literatures which were published at home and oversea ; the third is that i investigated some companies.

youdao