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人类终于迈入廿世纪最后一个五年、向着廿一世纪、也向着以公元纪年的第三个千年挺进。世界虽未完全摆脱战争的困扰,但发展毕竟已成为五大洲的主旋律。从世界范围看,铁路事业曾有过令人眩目的辉煌,也曾落入令人扼腕的低谷。但随着世界经济的迅猛发展和人类对生态环境的日益关注,加上铁路行业自身在艰难条件下的拼搏,高速、重载能力的不断提高,配套服务的逐步完善,已使各国政府认识到:必须审时度势对整个运输系统重新加
Mankind finally entered the last five years of the twentieth century, marching toward the 21st century, and marching toward the third millennium, the year of the Christian era. Although the world has not completely rid itself of the war, its development has, after all, become the main theme of the five continents. From a global perspective, the railway industry has had a dazzling glory, but also into a stagnant trough. However, with the rapid development of the world economy and increasing human concern for the ecological environment, coupled with the hard work of the railway industry itself in difficult conditions, the continuous improvement of high-speed and heavy-load capacity and the gradual improvement of supporting services, governments in all countries have realized : The situation must be reviewed for the entire transport system