Ключевые слова: accumulator, alkaline, bin, black, bolt, can, charge, charging, contour, cylinder, drop, eco, ecology, electrical, electricity, energy, environment, flammable, flash, fuel, full, generator, icon, illustration, indicator, isolated, level, lightning, line, linear, outline, power, propane, recharge, recycle, recycling, set, sign, silver, symbol, tank, technology, thunder, trash, turbine, windmill,