60kg/m钢轨12号混凝土枕提速道岔5.5m间距交叉渡线抬道施工
60kg/m강궤12호혼응토침제속도차5.5m간거교차도선태도시공
Lifting Operation of 60 kg/m Steel Track with 5.5m spacing No. 12 Concrete Sleeper Turnouts at Scissors Crossing