铁路是国民经济的大动脉,是发民经济巩固国防和满足人民生产、生活需要的重要交通工具,它是我国交通运输网中的骨干。十一届三中全会以来铁路建设事业取得了显著成绩,1981～1990年10年间共修新线4134km、新增复线4007km,实现电气化5296km,三项合计13410km,比70年代高出32%。10年当中贷运量从1980年的1085×10~6t增 The railway is the main artery of the national economy and an important means of transport for the national economy to consolidate its national defense and meet the needs of the people’s production and life. It is the backbone of China’s transportation network. The railway construction has made remarkable achievements since the Third Plenary Session of the 11th CPC Central Committee. During the 10 years from 1981 to 1990, a total of 4134km of new railway lines were completed, with an additional double-track of 4007km and an electrification of 5296km, totaling 13,410km in three items, 32% higher than in the 1970s. In 10 years, the amount of credit traffic increased from 1085 × 10 ~ 6t in 1980