<tt id="6hsgl"><pre id="6hsgl"><pre id="6hsgl"></pre></pre></tt>
          <nav id="6hsgl"><th id="6hsgl"></th></nav>
          国产免费网站看v片元遮挡,一亚洲一区二区中文字幕,波多野结衣一区二区免费视频,天天色综网,久久综合给合久久狠狠狠,男人的天堂av一二三区,午夜福利看片在线观看,亚洲中文字幕在线无码一区二区

          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 1994 - . 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: 久久蜜臀av一区三区| 国产一区二区三区黄色片| 无遮挡1000部拍拍拍免费| 久久精品国产久精国产| 亚洲欧美人成电影在线观看| 国产精品麻豆成人av网| 日本九州不卡久久精品一区| 九九热久久这里全是精品| 激情动态图亚洲区域激情| 中文字幕久久国产精品| 四虎成人免费视频在线播放| 日韩中文字幕高清有码| 国产综合久久久久久鬼色| 日本熟日本熟妇在线视频| 欧美日韩视频综合一区无弹窗| 精品国产91久久粉嫩懂色| 国内永久福利在线视频图片| 在线免费观看毛片av| 免费无码肉片在线观看| 亚洲精品天堂在线观看| 亚洲第一综合天堂另类专| 国产AV无码专区亚洲AV紧身裤| 人与禽交av在线播放| 精品少妇人妻av免费久久久| 欧美性猛交xxxx免费看| 亚洲精品成人片在线观看精品字幕| 欧美一级黄色影院| free性国产高清videos| 国产在线精品中文字幕| 人妻无码久久久久久久久久久 | 国产精品色内内在线播放| 日本边添边摸边做边爱喷水| 国产mv在线天堂mv免费观看| 国产精品中文一区二区| 亚洲国产超清无码专区| 国内少妇偷人精品免费| 国产精品黑色丝袜在线观看 | 国产成本人片无码免费2020| 国产jizz中国jizz免费看| 日韩av片无码一区二区不卡| 粉嫩虎白女p虎白女在线|