Ключевые слова: app, black, business, circle, cog, cogwheel, computing, concept, cooperation, design, element, engine, engineering, equipment, flat, gear, graphic, icon, illustration, industrial, industry, isolated, logotype, machine, machinery, mechanic, mechanical, mechanism, motion, outline, pictogram, progress, round, set, setting, sign, silhouette, simple, symbol, system, teamwork, technical, technology, web, wheel, work,