Ключевые слова: abstract, alloy, background, bicycle, bike, black, chain, close, closeup, cycling, detail, dirty, drive, equipment, gear, gearing, gearwheel, group, industrial, industry, iron, linked, lubrication, machine, macro, mechanical, metal, metallic, oil, old, part, ring, roller, selective focus, shiny, silver, sprocket, steel, technology, texture, worn out,