Ключевые слова: appliance, background, backyard, blue, closeup, connection, container, control, cylinder, detail, domestic, energy, equipment, fuel, gas, gauge, handle, hose, household, industrial, installation, machinery, metal, natural, object, outdoors, pipe, plumbing, pressure, propane, protective, red, regulator, safety, secure, storage, supply, tank, technology, tool, transport, utility, valve, wooden,