Ключевые слова: 10, acid, art, background, battery, black, button, charge, charger, chart, chemical, collection, design, electric, electrical, electricity, electronics, empty, energy, equipment, fuel, full, generation, grey, group, icon, illustration, industry, interface, isolated, lead, level, lightning, load, low, panel, plus, power, shadow, sign, simple, square, strength, supply, symbol, technology, white,