Ключевые слова: auto, automobile, automotive, box, car, circle, cogs, cogwheel, detail, engineering, gear, gearbox, gearing, industrial, industry, inside, machine, machinery, manual, manufacturing, mechanic, mechanical, mechanism, metal, movement, part, repair, rotate, rotor, section, serrated, serration, service, shaft, spare, spin, sprocket, steel, surface, technical, technology, tooth, torque, transmission, vehicle, wheel,