| Trad. | Simp. | Pinyin | English |
| 苯乙烯 | běn yǐ xī | Styrene | |
| 超高速乙太網路 | 超高速乙太网路 | chāo gāo sù yǐ tài wǎng lù | Gigabit Ethernet |
| 醋酸乙酯 | cù suān yǐ zhǐ | ethyl acetate; acetidin | |
| 對乙酰氨基酚 | 对乙酰氨基酚 | duì yǐ xiān ān jī fēn | paracetamol; acetaminophen |
| 二氯乙烷中毒 | èr lǜ yǐ wán zhōng dú | dichloroethane poisoning | |
| 二氫硫辛醯基乙醯基轉基酶 | 二氢硫辛醯基乙醯基转基酶 | èr qīng liú xīn xī jī yǐ xī jī zhuǎn jī méi | dihydrolipoyl transacetylase |
| 高速乙太網路 | 高速乙太网路 | gāo sù yǐ tài wǎng lù | fast Ethernet |
| 環氧乙烷 | 环氧乙烷 | huán yǎng yǐ wán | ethylene oxide |
| 聚苯乙烯 | jù běn yǐ xī | polystyrene | |
| 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 | |
| 四氯乙烯 | sì lǜ yǐ xī | tetrachloroethylene | |
| 四乙基鉛中毒 | 四乙基铅中毒 | sì yǐ jī qiān zhōng dú | tetraethyl lead poisoning |
| 乙 | yǐ | "B" (in a sequence of examples involving "A", "B", "C", etc.); 2nd heavenly stem; 2nd in order | |
| 乙醇 | yǐ chún | ethanol; alcohol | |
| 乙醚 | yǐ mí | diethyl ether | |
| 乙醛 | yǐ quán | acetaldehyde (H3CCHO); ethanal | |
| 乙炔 | yǐ quē | acetylene; ethyne C2H2 | |
| 乙酸 | yǐ suān | acetic acid (CH3COOH); ethanoic acid | |
| 乙酸鈉 | 乙酸钠 | yǐ suān nà | sodium acetate |
| 乙太 | yǐ tài | ether | |
| 乙太網路 | 乙太网路 | yǐ tài wǎng lù | Ethernet |
| 乙烷 | yǐ wán | ethane (C2H6) | |
| 乙烯 | yǐ xī | (n) ethylene | |
| 乙酰膽鹼酯酶抑制劑 | 乙酰胆碱酯酶抑制剂 | Yǐ xiān dǎn jiǎn zhǐ méi yì zhì jì | Acetylcholinesterase inhibitor |
| 乙酰磺胺酸 | yǐ xiān huáng àn suān | acesulfame potassium | |
| 乙型肝炎 | yǐ xíng gān yán | hepatitis B |
Click on the pinyin to hear it pronounced. The simplified version is shown only if different from the traditional.
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