91精品视频免费播放,天天射天天操天天干中文字幕,久久亚洲精品视频,国产流白浆,免费黄色按摩视频,久久青草91线频免费观看,日韩高清无码色色

banner
Yunnan Longjiang Bridge
2017-12-23 09:19:05


Longjiang Bridge is the key project from Yunnan Baoshan to Myitkyina road Baoshan in Myanmar and to Tengchong expressway with a total length of 2470.58m. The main bridge is designed to be 1196m twin towers and single span steel box girder suspension bridge and the maximum height of bridge is 280m. It will be the largest suspension bridge in mountainous area of Asia after the completion.


云南龍江特大橋.jpg