Ключевые слова: 3d illustration, abstract, background, blue, business, circle, cog, cogwheel, color, colorful, concept, dark, design, development, education, element, engineering, equipment, gear, icon, illustration, industrial, industry, line, linear, logo, math, measure, mechanical, mechanics, modern, outline, progress, round, science, shape, sign, stem, style, symbol, technical, technology, template, thin, wheel, work,