Zobrazeno 1 - 2
of 2
pro vyhledávání: '"Dong du Jang"'
Publikováno v:
Journal of The Korean Society For Urban Railway. 10:1288-1295
Publikováno v:
Journal of the Korean Society of Hazard Mitigation. 20:233-244
The conventional ballast track needs to be improved and replaced due to the rapid degradation of the track. While operating the conventional line, the track structure needs to be rapidly improved and constructed in a narrow restricted tunnel space du