Mega project! A sneak peek at world's widest immersed tube tunnel, currently under construction in Guangdong, China.
World's widest immersed tube tunnel under construction in S. China
Source: Xinhua| 2019-07-05 21:26:42|Editor: Xiaoxia
Mega project! A sneak peek at world's widest immersed tube tunnel, currently under construction in Guangdong, China.
