Ключевые слова: 3d, abstract, black, book, button, cog, cogwheel, computer, concept, engine, equipment, gear, gearshift, gearwheels, icon, illustration, internet, machine, machinery, macro, mechanical, mechanism, modern, motor, net, network, notepad, paper, paperwork, parchment, pc, press, program, settings, sign, software, sprocket, stamp, style, symbol, tech, technical, technology, teeth, tool, toothed, web, wheel, work,