Ключевые слова: agriculture, auto, background, car, circle, close, closeup, cog, cogwheel, connection, cooperation, detail, energy, engine, engineering, equipment, factory, gear, gearbox, hard, industrial, industry, iron, machine, machinery, mechanic, mechanical, mechanism, metal, metallic, motor, power, precision, production, reduction, repair, rotate, rotation, service, stainless, steel, technology, teeth, texture, transmission, transportation, truck, wheel, work,