This paper adopts the study methods such as literature study, case study and data analysis.

本文主要采用文献研究、案例研究、调查分析等研究方法。

youdao

This paper adopts the study methods such as literature study, case study and data analysis.

本文主要采用文献研究、案例研究、调查分析等研究方法。

youdao