جسر ، سكة حديدية ، قطار ، خطوط السكك الحديدية ، طريق السكك الحديدية ، صلب ، هندسة معمارية ، صناعة البناء والتشييد ، هيكل بني ، معدن ، صناعة
الصور ذات الصلة الخالية من حقوق الملكية
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