男女羞羞视频在线观看,国产精品黄色免费,麻豆91在线视频,美女被羞羞免费软件下载,国产的一级片,亚洲熟色妇,天天操夜夜摸,一区二区三区在线电影

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: 澄迈县| 天台县| 苍南县| 娱乐| 海原县| 永和县| 修水县| 奉新县| 梁山县| 彭泽县| 广南县| 莱阳市| 克山县| 铁力市| 扶沟县| 兴海县| 石景山区| 崇文区| 枣阳市| 漳平市| 濉溪县| 筠连县| 水城县| 萍乡市| 商都县| 宜川县| 邓州市| 漳浦县| 麻栗坡县| 长乐市| 商南县| 宜黄县| 汉阴县| 清流县| 永寿县| 堆龙德庆县| 类乌齐县| 皮山县| 吉木萨尔县| 辽宁省| 宁津县| 伊川县| 和硕县| 镇康县| 蒙山县| 若尔盖县| 承德县| 搜索| 渑池县| 罗山县| 华亭县| 苏尼特左旗| 滦南县| 菏泽市| 永昌县| 屏南县| 华宁县| 连云港市| 宁阳县| 渝中区| 阿克| 吉隆县| 武威市| 长兴县| 深州市| 镇远县| 灌阳县| 邵阳市| 滕州市| 金沙县| 德清县| 古浪县| 彩票| 莱阳市| 华池县| 罗城| 成都市| 辽宁省| 马鞍山市| 威海市| 木兰县| 会理县|