This paper gathers information through questionnaire survey and in-depth interviews by the method of combining statistical investigation with on-the-spot research.

本文研究采用统计调查与实地研究相结合的方法，通过问卷调查与深度访谈搜集资料。

youdao

This paper gathers information through questionnaire survey and in-depth interviews by the method of combining statistical investigation with on-the-spot research.

本文研究采用统计调查与实地研究相结合的方法，通过问卷调查与深度访谈搜集资料。

youdao