By the method of content analysis, the text analyzes the factors about frictions in data and settles the result logically.It is summarized in data and logically.

• 本文采用内容分析法对引发摩擦的各因素进行数据化分析，并对分析结果从逻辑上作简要整理，使关于贸易摩擦原因的综述数量化、逻辑化。