一、基本状况40年来,特别是“六五”至“七五”期间,全国基本建设队伍发展迅猛。国家从七十年代起,陆续引进了一批进口设备,重点装备国营大中型施工企业,缩短了国内装备和国外装备水平之间的差距。为宝山钢铁总厂,金山、扬子、齐鲁乙烯工程,葛洲坝水电站,大秦铁路专线以及一批大型化肥厂和港口设施建设等国家重点项目的顺利竣工投产,创造了条 I. Basic Conditions In the past 40 years, especially during the period from the “6th Five-Year Plan” to the “Seventh Five-Year Plan”, the country’s basic construction team has developed rapidly. Since the 1970s, the country has successively introduced a number of imported equipment, focusing on large- and medium-sized state-owned construction companies, and shortening the gap between domestic equipment and foreign equipment. For the Baoshan Iron and Steel Plant, Jinshan, Yangzi, Qilu Ethylene Project, Gezhouba Hydropower Station, Daqin Railway Line, and a number of large-scale fertilizer plants and port facilities, the national key projects were successfully completed and put into operation, creating