yì dīng wán / shì / yī zhǒng / cháng jiàn / de / zhì lěng jì / yě / yòng yú / shēng chǎn / qì yóu异丁烷是一种常见的制冷剂,也用于生产汽油。Isobutane is a common refrigerant and is also used in gasoline production.