实证分析与规范分析相结合是经济学分析的一贯原则。
It is a permanent principle that we combine positive analysis and normative analysis in economic analysis.
大部分学者，包括该文集所收录的文章的作者，过去也没有使用规范的、系统的经济学方法来分析、构建他们的研究课题。
Most of these scholars-including some of the contributors to this volume-have not in the past made regular and systematic use of economic analysis to inform and structure their inquiries.
由于评标工作日趋规范化和科学化，经济分析对投标报价的积极作用就必然会更加突出。
As evaluation tends to be more specific and scientific, economic analysis would evitably have active and obvious impact on the bidding and quotation activities.
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