freon

Fre.on

NONE（无词性）
A trademark used for a variety of nonflammable gaseous or liquid fluorinated hydrocarbons employed primarily as working fluids in refrigeration and air conditioning and as aerosol propellants.
氟利昂：一种用于一些不可燃气体或液体烷属烃的商标，主要用于制冷、空气调节和推进剂