【摘要】 阐述了项目规模经济来源于项目的建设过程和运营过程,不同项目的规模经济来源是不同的。由于项目的开工率、运输成本、技术限制、需求的多样化等原因,项目的规模不能无限扩大。更多还原

【Abstract】 The paper studies the origin of project of scale economics. The scale economics comes from construction process of project and its operation,The scale of project can′t extend unlimitedly due to the reason of start-working ratio,transport cost,technique limited and various of requirement.更多还原