Ключевые слова: auto, automobile, ball, bearing, car, cogwheel, engine, engineering, equipment, friction, gear, industrial, industry, iron, isolated, manufacturing, material, mechanical, metal, metallic, motor, old, part, power, repair, replacement, roller, round, section, service, shiny, silver, spare, spark, steel, technical, technology, transmission, transport, transportation, truck, valve, vehicle, wheel,