Ключевые слова: 20, abstract, accuracy, background, closeup, cnc, cog, cogwheel, concept, curve, cut, cutter, design, detail, engine, engineering, equipment, factory, gear, gearbox, grinding, industrial, industry, isolated, light, machine, machinery, machining, manufacturing, mechanical, mechanism, metal, metallic, mill, motion, part, perspective, pinion, power, precision, rolling, shiny, steel, straightcut, technology, teeth, transmission, transmitting, wheel, work,