Ключевые слова: abstract, background, big, bolt, cardboard, chrome, close, closeup, concepts, connection, construction, design, detail, dirty, engineering, equipment, heavy, industrial, industry, iron, machine, macro, material, metal, nobody, objects, old, pattern, rod, rough, round, screw, shine, silver, stainless, steel, structure, technology, thread, threaded, threads, tool, transportation, up, white, work, worker,