Ключевые слова: city life, cityscape, commercial use, cylinder tanks, day, energy, energy source, environmental management, flammable, fuel and power generation, fuel supply, gas cylinders, gas industry, gas meter, gas one, gas pipes, gas storage, gas tank, high pressure, hoses, industrial equipment, industrial gas, japan, japanese text, metal, no people, outdoor, outside, propane, resource, safety, secured, storage, store, street, tokyo, urban, utility services, valves,