一九六四年下半年，中共中央和毛泽东同志根据六十年代中期世界战争爆发可能性的估计，作出了在四川、贵州、云南、陕西、青海、甘肃等省和河南、湖南西部等地进行三线建设的重大战略决策，对我国工业布局、生产资源配置进行了重大战略转移。三线建设是运用军事术语对我国六十 In the second half of 1964, the CPC Central Committee and Comrade Mao Tse-tung made judgments on the possibility of an outbreak of world war in the mid-1960s in areas such as Sichuan, Guizhou, Yunnan, Shaanxi, Qinghai, Gansu and Henan and Hunan and other places in Hunan Major strategic decisions in the construction of the third line have made a major strategic shift in China’s industrial layout and the allocation of production resources. Third-line construction is the use of military terms on our country sixty