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