Ключевые слова: agricultural, agriculture, chain, chain belt, chain transmission, circle, close up, closeup, cogwheel, connection, cycle, detail, device, engineering, equipment, factory, fragment, gear, grease, industrial, industry, iron, link, linkage, lubrication, machine, machinery, manufacturing, mechanical, mechanics, mechanism, metal, part, pinion, planter, precision seeders, prong, red, rotation, sprocket, system, technical, technology, transmission, transportation, wheel, wheels,