Ключевые слова: architecture, assembly, background, beam, blue, building, built, business, closeup, cloud, commercial, connection, construction, design, detail, engineering, exterior, factory, flock, frame, framework, gray, horizontal, if you, industry, infrastructure, iron, manufacturing, material, metal, modern, nut, office, pattern, plant, roof, ship, skeleton, sky, skyscraper, steel, strength, structure, truss, unfinished, urban, warehouse, welding, white, workshop,