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京沪高速铁路前期研究的基本经验──在京沪高速铁路重大技术经济问题前期研究课题总结会上的讲话国家科委副主任惠永正软科学研究要像京沪高速铁路前期研究这样，从客观实际需要出发．从重大经济建设中寻找课题。京沪高速铁路前期研究从１９９３年４月开始部署，至１９９...
Beijing-Shanghai high-speed railway preliminary study of the basic experience ─ ─ in the Beijing-Shanghai high-speed railway major technical and economic issues at the preliminary research speech at the meeting of the State Science and Technology Commission deputy director Hui Yongzheng soft science research should be like the Beijing-Shanghai high-speed railway research earlier, from Objective and actual needs of departure. Seeking Issues from Major Economic Development. Beijing-Shanghai high-speed railway preliminary research from April 1993 to deploy, to 199 ...