Any of a number of inert compounds produced by replacing hydrogen by fluorine, used as aerosol propellants, refrigerants, lubricants, and fire extinguishers and in making resins and plastics.

任何以氟取代氢的化合物(如雾状的推进燃料、冷却剂、灭火剂、或用于制造松脂和塑胶)。