Ключевые слова: abstract, architecture, assembly, auto, automobile, background, black, bolt, component, construction, engine, fabrication, fuse, fusion, garbage, gear, gray, grey, industrial, industry, iron, join, joining, junk, material, metal, metallic, paint, part, pattern, piece, scrap, sculpture, soldering, solid, steel, structure, unused, weld, welding, white, work,