Ключевые слова: abstract, background, bearing, brown, chrome, circle, closeup, concept, construction, corrosion, design, detail, dirty, engine, engineering, equipment, erosion, gear, grunge, hard, industrial, industry, iron, machine, machinery, material, mechanic, mechanical, metal, metallic, object, old, radial, reflection, ring, round, rust, rusty, scooter, service, set, silver, steel, surface, technical, tool, used, wheel, work,