4 ms·
This is the one used in Chinese HSR construction, for elevated viaducts. https://youtu.be/T7hdo9tL6u0 https://youtu.be/T7hdo9tL6u0
by azurezyq 8y ago
This is the one used in Chinese HSR construction, for elevated viaducts.
https://youtu.be/T7hdo9tL6u0 https://youtu.be/T7hdo9tL6u0