Check out this soundproof tunnel along Beijing-Xiong'an Railway

Source: Xinhua| 2020-12-30 16:56:14|Editor: huaxia

Check out this soundproof tunnel for high speed trains, which can reach speeds as high as 350km/h, along a new intercity railway that links Beijing with Xiong'an, China's "city of the future". ■

KEY WORDS:
EXPLORE XINHUANET
010020070750000000000000011102121396299181
草莓app黄-草莓视频app-草莓视频app下载