Ключевые слова: assembly, black, change, cog, cogwheel, component, design, different, direction, engineering, gear, gearing, gearwheel, generate, industrial, industry, interlock, isolated, machine, machinery, mechanical, mechanism, mesh, metal, motion, motor, motorized, movement, object, on white, part, power, precise, precision, ratio, round, sizes, speed, steel, teeth, three, toothed, toy, transmit, turn, wheel,