Ключевые слова: alternative, atom, banner, building, business, chemical, construction, derrick, droplet, ecology, economic, electricity, energy, engineering, equipment, factory, fuel, gas, gear, geometry, hexagon, icon, illustration, industrial, industry, innovation, internet, machine, manufacture, manufacturing, net, nuclear, oil, petrol, plant, pollution, power, presentation, recycling, refinery, science, silhouette, south korea, stream, supply, tech, technology, wave, web, wind,