Ключевые слова: abstract, atom, atomic, background, button, chemical, chemistry, circle, concept, danger, design, electricity, element, energy, environment, factory, flat, graphic, icon, illustration, industrial, industry, isolated, medicine, model, molecular, molecule, neutron, nuclear, object, particle, physics, plant, pollution, power, proton, radiation, research, science, scientific, set, shape, sign, silhouette, structure, symbol, technology, web, white,