Ключевые слова: auto, automobile, automotive, battery, bevel, blue, brake, business, car, cartoon, circle, concepts, connection, cooperation, design, elements, engine, engineering, equipment, gate, gears, helical, icon, illustration, industry, internet, machinery, mechanisms, metal, modern, parts, pipeline, piston, repairing, service, set, shape, sign, spare, steel, symbol, teamwork, technology, valves, vertical, wheel, worm,