Ключевые слова: atom, black, building, business, cash, contour, dollar, drilling, drop, energy, equipment, factory, fire, flame, fuel, gas, gasoline, geological, geology, gold, golden, icon, illustration, industrial, industry, isolated, jack, line, linear, liquid, molecular, molecule, oil, outline, paper, petrol, petroleum, pipe, pipeline, power, pump, rig, science, set, station, technology, tower,