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: 吴堡县| 绥江县| 海原县| 清涧县| 武冈市| 邳州市| 襄垣县| 河西区| 沙坪坝区| 栾城县| 元阳县| 红桥区| 濮阳市| 庄浪县| 康马县| 常宁市| 阆中市| 武威市| 新营市| 涿州市| 普兰店市| 高唐县| 内江市| 旺苍县| 新泰市| 怀集县| 丽江市| 长兴县| 南康市| 福鼎市| 牡丹江市| 新沂市| 子洲县| 新干县| 抚远县| 芮城县| 博客| 福泉市| 宜兰县| 锡林浩特市| 汾西县|