国产激情过程亭亭国产|狠狠操208在线色成人|婷婷AV五月在线|永久在线视频成人AV射在线|1区2区3区性交|亚洲欧美顶级A片在线在线播放|91日本韩国欧美A片婷|超碰无码在线不卡|日韩黄色A片免费看|一级a中文字幕在线免费视频

banner
Hulukou Bridge
2017-12-23 09:09:27


Hulukou Bridge and wiring project is located in the Jinsha river reach adjacent by Ningnan county of Sichuan province and Qiaojia county of Yunnan province, about 37Km away from the upstream of Baihe beach hydropower station dam site and the project is 3466.267m long. The main bridge adopts 158+656+145m steel truss stiffening girder suspension bridge with 25+25m approach, 20+20m reinforced concrete box girder and a total length of 746m.


葫蘆口大橋.jpg