railway network /xây dựng/
mạng đường ray
railway network /xây dựng/
vật tư đường sắt
railway network, trackage /xây dựng/
mạng đường sắt
railroad material, railroad stock, railway network, railway system
vật tư đường sắt
railroad network, railroad system, railway network, railway operation, track network
mạng lưới đường sắt