Ключевые слова: automobile, automotive, bevel, cog, cogwheel, drive, engine, engineering, equipment, gear, gearbox, gearing, gearshift, geometric, hardware, industrial, industry, iron, machine, machinery, manufacturing, material, mechanic, mechanical, mechanism, metal, module, object, part, pinion, pitch, power, precise, precision, ratio, rotation, shaft, spare, steel, strength, structure, technology, teeth, tooth, torque, transfer, transmission, transportation, vehicle, work,