different vaporous mixtures of carbon, hydrogen, chlorine, and fluorine, utilized as refrigerants, airborne fuels, solvents, and in froth: some reason a breakdown of ozone in the world's air
different vaporous mixtures of carbon, hydrogen, chlorine, and fluorine, utilized as refrigerants, airborne fuels, solvents, and in froth: some reason a breakdown of ozone in the world's air