99久久久久久久无码,熟女作爱一区二区视频,熟妇的味道HD中文字幕,91视频网站免费观看,成人毛片18女人毛片真水

Strengthening

Location:Home>Strengthening

Monitoring system of bridge along the Olympic Games extension highway
2024-07-04 11:41:02

With a total length of about 116 kilometers, Yangao Expressway is the direct high-speed channel between the Yanqing Olympic Games in 2022 and Chongli Olympic Games in Zhangjiakou. There are 5 Bridges and 3 tunnels along the line, and more than 700 monitoring points are distributed, which is a whole-life monitoring system.


111.jpg

The Winter Olympic Games extended along the lofty speed