Ключевые слова: abstract, background, black, blue, business, classic, clock, clockwork, closeup, cog, cogwheel, concept, conceptual, connect, cooperation, design, energy, engine, equipment, factory, gearbox, gears, industrial, interlock, iron, machine, machinery, macro, mechanical, metallic, motion, motor, parts, power, precious, precision, progress, rotate, shine, steel, success, team, teamwork, technology, teeth, transmission, watch, wheel, work,