Ключевые слова: abstract, arrow, background, blue, business, circle, clock, cog, cogwheel, concept, deadline, design, element, engineering, equipment, gear, graphic, hour, icon, illustration, industrial, instrument, isolated, machine, machinery, management, mechanical, mechanism, metal, metallic, minute, modern, motion, object, second, sign, steel, symbol, technical, technology, time, timer, watch, wheel, work, yellow,