| Trad. | Simp. | Pinyin | English |
| 苯乙烯 | běn yǐ xī | Styrene | |
| 丙烯 | bǐng xī | (n) propylene | |
| 丙烯腈 | bǐng xī jīng | Acrylonitrile | |
| 丙烯醛 | bǐng xī quán | acrolein | |
| 丙烯酸 | bǐng xī suān | acrylic acid | |
| 單端孢霉烯類毒素 | 单端孢霉烯类毒素 | dān duān bāo méi xī lèi dú sù | trichothecenes (TS, T-2) |
| 單端孢霉烯類毒素中毒症 | 单端孢霉烯类毒素中毒症 | dān duān bāo méi xī lèi dú sù zhōng dú zhèng | trichothecenes toxicosis |
| 丁二烯 | dīng èr xī | 1,3-Butadiene | |
| 聚苯乙烯 | jù běn yǐ xī | polystyrene | |
| 聚丙烯 | jù bǐng xī | polypropylene | |
| 聚氯乙烯 | jù lǜ yǐ xī | polyvinyl chloride | |
| 聚四氟乙烯 | jù sì fú yǐ xī | polytetrafluoroethylene | |
| 聚乙烯 | jù yǐ xī | (n) polythene; polyethylene | |
| 磷酸烯醇丙酮酸 | lín suān xī chún bǐng tóng suān | phosphoenolpyruvate | |
| 氯已烯 | lǜ yǐ xī | chloroethylene | |
| 三氯已烯 | sān lǜ yǐ xī | trichloroethylene | |
| 四氯乙烯 | sì lǜ yǐ xī | tetrachloroethylene | |
| 烯 | xī | alkene | |
| 烯烴 | 烯烃 | xī tīng | alkene |
| 乙烯 | yǐ xī | (n) ethylene | |
| 玉米赤霉烯酮 | yù mǐ chì méi xī tóng | zearalenone |
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