我国高速铁路与世界发达国家相比发展较晚,虽然从20世纪90年代以前就已开始讨论规划建设京沪高速铁路,但直到21世纪初才开始有实质性的进展。2003年我国建成了第一条客运专线——秦沈客运专线,但它初期开行旅客列车最高速度才160公里/小时,并不是真正意义上的高速铁路。我 Compared with developed countries in the world, China’s high-speed railway developed relatively lately. Although planning and construction of the Beijing-Shanghai high-speed railway started to be discussed before the 1990s, substantive progress began only in the early 21st century. In 2003 our country built the first passenger dedicated line - Qin Shen passenger line, but it initially opened the highest speed passenger trains only 160 km / h, not the real sense of the high-speed railway. I