Shijiazhuang No. 1 subway line the longest most difficult interval through

white retention interval (Baifo Station - leaving the village station) full-length 2014.4 meters of construction a year and a half across Beijing, Hong Kong and Macao expressway tunnel there exists "V" slope and a number of "s" shape yesterday, Metro Line 1 of the stone city came good information: after a year and a half of the time, after two shield received well "the midfield debugging, through Beijing, Hong Kong and Macao expressway, highway toll station and the number of risk sources, forming a beautiful S-shaped curve, Shijiazhuang Metro...