ηλεκτρικά καλώδια, ηλεκτρική ενέργεια, ενέργεια, αστικός, παραγωγή καυσίμων και ηλεκτρικής ενέργειας, γραμμή ρεύματος, ατσάλι, βιομηχανία, παροχή ηλεκτρικού ρεύματος, ηλεκτρικό πυλώνα, μέταλλο
Public Domain
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