Ключевые слова: abstract, background, ball, balls, bearing, bearings, business, closeup, computer, concept, conceptual, constructing, detail, device, drive, engine, engineering, factory, gear, gearing, gears, idea, industrial, industry, iron, job, machine, machinery, mechanism, metal, motor, occupation, part, parts, plant, plate, repair, spare, steel, storage, technology, toned, tool, vehicle, vehiclepart, wheel, workshop,