Ключевые слова: 2020, 3d, accessory, annual, banner, business, calendar, card, celebration, construction, contour, date, december, engine, engineering, equipment, event, fasten, hardware, hex, hexagon, industry, isometric, machine, macro, mechanic, mechanism, new, number, nut, outline, part, party, poster, production, repair, research, science, screw, season, technical, technology, text, thread, time, tool, workshop, year,