男友太凶猛1v1高h,大地资源在线资源免费观看 ,人妻少妇精品视频二区,极度sm残忍bdsm变态

Rail sector continues successful journey

By Wang Keju | China Daily | Updated: 2019-09-18 08:59
Share
Share - WeChat
Employees of China Railway No 3 Engineering Group lay rail tracks on the Guanting Reservoir bridge, part of the Beijing-Zhangjiakou High-Speed Railway, in January. YANG SHIYAO/XINHUA

China is becoming a global player in the construction of high-speed networks. Wang Keju reports.

Editor's note: To celebrate the 70th anniversary of the founding of the People's Republic of China, we will publish a series of stories reflecting on changes and developments in fields such as law, education, transportation and the environment. This is the second in the series.

When the last piece of beam was capped on the Badaling Great Wall Railway Station late last month, all the main structures of the Beijing-Zhangjiakou High-Speed Railway line had been completed.

Linking Beijing and Zhangjiakou in the northern province of Hebei, the upgraded 110-year-old railway will play an important role in the transportation infrastructure for the 2022 Beijing Winter Olympics.

Set to open to the public by the end of the year, it will feature the world's first automatically driven, driver-monitored trains, running at a top speed of 350 kilometers per hour.

The original railway, the first of its kind designed and built solely by Chinese engineers during the Qing Dynasty (1644-1911), began operations in 1909 after four years of hectic construction work led by Zhan Tianyou, known as the "father of China's railroad".

At the time, construction of the railway without the assistance of foreign experts was considered a "mission impossible" because of the complicated geological conditions. Faced with dramatic topography and a shortage of machinery, Zhan and his colleagues employed a technique known as "zigzagging" to negotiate steep gradients.

Against all odds, they completed the railway two years ahead of schedule. From a top speed of just 35 km/h more than 100 years ago, in the near future the line is set to witness trains running at speeds 10 times faster than the old, steam-powered locomotives.

"The line is the starting point of China's rapidly expanding rail network. The evolution of the railway mirrors the rapid development of the national economy and our progress in modern science and technology," said Wang Hongyu, the railway's chief designer.

1 2 3 4 5 Next   >>|
Top
BACK TO THE TOP
English
Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US
主站蜘蛛池模板: 洪泽县| 珠海市| 梅河口市| 密云县| 名山县| 璧山县| 丹棱县| 新闻| 蛟河市| 台湾省| 永新县| 汝南县| 望谟县| 凤庆县| 中卫市| 伊吾县| 湘潭市| 获嘉县| 铅山县| 滁州市| 清水河县| 杨浦区| 北辰区| 察雅县| 沙坪坝区| 奈曼旗| 麻阳| 陵水| 个旧市| 天台县| 宽城| 广元市| 焦作市| 临漳县| 犍为县| 五大连池市| 湖南省| 上犹县| 娱乐| 淮滨县| 邯郸县|