1. <sub id="zy88n"></sub>
        1. <blockquote id="zy88n"></blockquote>
          欧美黑人又大又粗xxxxx,人人爽久久久噜人人看,扒开双腿吃奶呻吟做受视频,中国少妇人妻xxxxx,2021国产在线视频,日韩福利片午夜免费观着,特黄aaaaaaa片免费视频,亚洲综合日韩av在线

          China's new architectural wonder: a 46,000-tonne bridge rotates successfully

          Source: Xinhua| 2019-07-30 14:01:46|Editor: mingmei
          Video PlayerClose
          CHINA-HEBEI-BAODING-BRIDGE-ROTATION (CN)?

          This aerial photo taken on July 30, 2019 shows two parts of a bridge above the Beijing-Guangzhou Railway after they are successfully rotated to their targeted positions using the swivel construction method in Baoding, north China's Hebei Province. China has adopted the swivel construction method in building many bridges to minimize the interference on the traffic below. The method helps overcome the constraints of environment and traffic, while shortening the construction period. (Photo by Wang Huitang/Xinhua)

          BEIJING, July 30 (Xinhua) -- A bridge, weighing 46,000 tonnes and measuring 263.6 meters long, was successfully rotated to its targeted position in Baoding, northern China's Hebei Province Tuesday.

          The bridge swiveled around an angle of 52.4 degrees in 68 minutes above the Beijing-Guangzhou Railway, minimizing the interference on the railway traffic running below.

          The bridge was constructed by the South Branch of the China Construction Communications Engineering Group Corporation. The weight and span of the swivel bridge refreshed the world record.

          A spherical hinge, which is the "axis" supporting the rotating body, is a major piece of equipment used to turn the bridge. The diameter of the spherical hinge used in the project reached 6.5 meters, setting a new world record.

          China has adopted the swivel construction method in building many bridges. The method helps overcome the constraints of environment and traffic, while shortening the construction period.

             1 2 3 4 5 Next  

          KEY WORDS:
          EXPLORE XINHUANET
          010020070750000000000000011100001382694871
          主站蜘蛛池模板: 国产爽视频一区二区三区| 亚洲小说图区综合在线| 国产对白老熟女正在播放| 国产免费一区二区三区视频在线| 二区三区国产在线观看| 日本免费一区二区观看| 国产精品免费看久久久麻豆| 久久婷婷人人澡人人爽人人喊| 久久久久中文字幕无码少妇| 久久国产精品久久精品国产| 18禁无遮挡啪啪无码网站破解版| a级福利毛片| 日本九州不卡久久精品一区| 亚洲熟妇无码av不卡在线观看| 一区二区三区国产亚洲网站| 国产毛片一区二区精品| 国产一区二区三区4区| 国产精品人成电影在线观看| 亚洲av婷婷一区二区三区| 精品国产AV色欲果冻传媒 | 熟妇人妻av中文字幕老熟妇| 一本大道一卡二大卡三卡免费| 亚洲综合无码精品一区二区| 女人爽到高潮免费看视频| 亚洲色大成网站www永久男同| 日韩激情一区二区无码AV| 四虎在线中文字幕一区| 国产69精品久久久久app下载| 国产成人综合久久久久久| 麻豆精产国品一二三产品何苗| 手机看片国产av无码| 少妇人妻在线视频| 国产成人午夜精品久久久久久| 国产偷国产偷亚州清高app| 国产成人综合亚洲一区| av免费在线观看国产| 国产亚洲欧美在线人成aaaa| 天堂a无码a无线孕交| 国产精品热久久无码av| 午夜电影在线观看国产1区| 又爽又黄又无遮掩的免费视频|