/-{-{bǐngxī}-}-/, /pɪŋ³⁵ hei̯⁵⁵/, /biingshi/, /bing2 hei1/, /bing2 hei1/, /bing2 héi1/, /bǐngsi/、/ㄅㄧㄥˇ ㄒㄧ/
(有機化學) 三元烯烴，常溫正常氣壓下為氣體，化學式C3H6