freon 22造句

• Iron pipe fittings were affixed to the freon 22 tank, which provided the pressure that powered the gun.
• According to measurements taken on previous spaceflights that date back to 1985, levels of Freon 22 are rising in the more populous regions of the globe where ozone losses also are occurring.
• Another process, perhaps involving the industrial use of an unregulated refrigerant called Freon 22, may be depleting ozone close to the equator and into the Northern Hemisphere, speculated Gunson, whose shuttle instrument is measuring more than 30 chemicals in the Earth's atmosphere.
• A : There are many kinds of freon, including freon 12 ( also called R12 ), the type used in car air conditioners, and freon 22 ( R22 ), which is used in homes and buildings, a spokesman for the Environmental Protection Agency said.
• Although freon 22 doesn't deplete the ozone layer as quickly as freon 12, it also is being phased out, but on a slower schedule ( from Jan . 1, 2003, to Jan . 1, 2030, again depending on the substances ).