本文运用理论分析和实证分析相结合的方法对这一问题进行了系统的分析。
This text carries on systematic analysis to this question with the method of the theory-analyses and demonstration-analyses.
在综合国内外学者对新产品开发的研究综述和理论基础上，采用理论分析与实证研究相结合的方法，对以下问题进行了定性与定量相结合的分析研究。
The following issues are analyzed and studied qualitatively on the bases of the research on the new products by foreign scholars as well as the method of associating theory with proofs.
本文主要采用理论分析和实证研究相结合、定性分析与定量分析相结合的方法。
This dissertation adopts an integrated method of theoretical analysis and empirical research, qualitative analysis and quantitative analysis.
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