Ключевые слова: abstract, apparatus, backdrop, background, chain, cogwheel, conveyor, device, engine, equipment, factory, gear, gearbox, gearwheel, hard, industrial, industry, lab, laboratory, machine, manufacture, manufacturing, mechanism, metal, model, obsolete, old, plant, processing, rackwheel, reducer, reduction, retro, roller, speed, transporter, vintage, wheel, work,