Railway switch with intersecting tracks ballast concrete sleepers and steel rails on modern rail infrastructure transportation 库存图片 railway switch with intersecting tracks ballast concrete sleepers and steel rails on modern rail infrastructure transportation
Ballast gravel wagons beside railway tracks close overhead view of freight loaded with near modern and rail infrastructure 免版税库存照片 ballast gravel wagons beside railway tracks close overhead view of freight loaded with near modern and rail infrastructure
A low angle view of modern steel train tracks resting on concrete sleepers in gravel ballast bed close up perspective parallel 库存图片 a low angle view of modern steel train tracks resting on concrete sleepers in gravel ballast bed close up perspective parallel
Railway switch track with steel rails and ballast for modern infrastructure close up of a concrete sleepers crushed stone 库存照片 railway switch track with steel rails and ballast for modern infrastructure close up of a concrete sleepers crushed stone
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