氟利昂有几种？R12、R22有何区别？能... 氟利昂有几种？R22有何区别？

氟利昂有几种？R22有何区别？ 氟里昂制冷剂主要包括 R11、R12、R113、R114、R115、R500、R502 和 R22、R123、R141b、R142b 及 R134A、R125、R32、R407C、R410A、R152等 常用...