Ключевые слова: abstract, aged, background, business, classic, close up, closeup, cogs, cogwheel, concept, connect, connection, cooperation, design, engine, engineering, gear, gears, group, heart, idea, industrial, industry, interlocked, love, machine, machinery, macro, mechanical, mechanics, mechanism, metal, motion, part, parts, pattern, power, precision, progress, round, shape, shiny, steel, team, teamwork, technical, technology, turning, wheel, work, working,