Ключевые слова: belt, building, cable, chain, circle, closeup, construction, control, detail, direction, drive, electrical, elevator, engineering, equipment, factory, gear, heavy, high, industrial, inside, interior, lift, machine, maintenance, mechanism, metal, motion, motor, moving, old, part, power, pulley, quality, roller, rope, rotate, round, service, shaft, steel, structure, support, technical, technology, transportation, wheel, wire, work,