literature survey

The second is a combination of literature survey and field survey.

二是文献调查与实地调查相结合的方法。

Firstly the author started with the literature survey about DSCM and thin film test technology, and knew about the use and development direction of these two methods respectively.

论文首先对数字散斑相关方法和薄膜力学性能测试技术分别进行文献调研，了解这两种方法的当今的运用与发展情况。

This text use questionnaire investigation method, literature survey method, interview method, take action method of studying.

本文运用了问卷调查法, 文献综述法, 访谈法, 行动研究法.

Literature survey mainly for the collection of the relevant papers and data in CNKI, summed up problems and the status quo.

文献法一方面用于对CNKI相关论文与数据的查询搜集，归纳存在问题、研究现状。

Methods Literature survey and theory analysis.

方法文献考证与理论分析。