| 双射 | shuāng shè | bijection; one-to-one map (math.) |
| 双层公共汽车 | shuāng céng gōng gòng qì chē | double decker bus |
| 双层巴士 | shuāng céng bā shì | double-decker bus |
| 双层玻璃 | shuāng céng bō li | double glazing |
| 双峰 | Shuāng fēng | Twin peaks; Shuangfeng county in Loudi 娄底, Hunan |
| 双峰县 | Shuāng fēng xiàn | Twin peaks county; Shuangfeng county in Loudi 娄底, Hunan |
| 双复磷 | shuāng fù lín | obidoxime chloride; toxogonin |
| 双性恋 | shuāng xìng liàn | bisexual; bisexuality |
| 双抽 | shuāng chōu | black soy sauce |
| 双拐 | shuāng guǎi | crutches |
| 双拼 | shuāng pīn | double pinyin |
| 双击 | shuāng jī | double-click |
| 双摆 | shuāng bǎi | double pendulum (math.) |
| 双方同意 | shuāng fāng tóng yì | bilateral agreement |
| 双曲 | shuāng qū | hyperbola; hyperbolic (function) |
| 双曲抛物面 | shuāng qū pāo wù miàn | hyperbolic paraboloid (math.) |
| 双曲拱桥 | shuāng qū gǒng qiáo | double arched bridge |
| 双曲正弦 | shuāng qū zhèng xián | hyperbolic sine or sinh (math) |
| 双曲线正弦 | shuāng qū xiàn zhèng xián | hyperbolic sine or sinh (math) |
| 双曲余割 | shuāng qū yú gē | hyperbolic cosecant, i.e. function cosech(x) |
| 双曲余弦 | shuāng qū yú xián | hyperbolic cosine or cosh (math) |
| 双月刊 | shuāng yuè kān | bimonthly publication |
| 双柏 | Shuāng bǎi | Shuangbai county in Chuxiong Yi autonomous prefecture 楚雄彝族自治州, Yunnan |
| 双柏县 | Shuāng bǎi xiàn | Shuangbai county in Chuxiong Yi autonomous prefecture 楚雄彝族自治州, Yunnan |
| 双核 | shuāng hé | dual core (computing) |
| 双极 | shuāng jí | bipolar |
| 双杠 | shuāng gàng | parallel bars (gymnastics event) |
| 双桥 | Shuāng qiáo | Shuangqia suburban district of Chongqing municipality, formerly in Sichuan |
| 双桥区 | Shuāng qiáo qū | Shuangqia suburban district of Chongqing municipality, formerly in Sichuan; Shuangqia district of Chengde city 承德市, Hebei |
| 双壳类 | shuāng ké lèi | bivalve; Lamellibranchia |
| 双氯灭痛 | shuāng lǜ miè tòng | diclofenac pain-killer; also called 扶他林 |
| 双氯芬酸钠 | shuāng lǜ fēn suān nà | diclofenac sodium, a non-steroidal anti-inflammatory drug used to reduce swelling and as pain-killer; also called voltaren 扶他林 |
| 双氯醇胺 | shuāng lǜ chún àn | clenbuterol |
双江拉祜族佤族布
朗族傣族自治县 | Shuāng jiāng lā hù zú Wǎ zú Bù lǎng zú Dǎi zú zì zhì xiàn | Shuangjiang Lahu, Va, Blang and Dai autonomous county in Lincang 临沧, Yunnan |
| 双江县 | Shuāng jiāng xiàn | Shuangjiang Lahu, Va, Blang and Dai autonomous county in Lincang 临沧, Yunnan |
| 双流县 | Shuāng liú xiàn | Shuangliu county in Chengdu 成都, Sichuan |
| 双清 | Shuāng qīng | Shuangqing district of Shaoyang city 邵阳市, Hunan |
| 双清区 | Shuāng qīng qū | Shuangqing district of Shaoyang city 邵阳市, Hunan |
| 双湖 | Shuāng hú | two lakes; Shuanghu special district, Tibetan: Mtsho gnyis don gcod khru'u, in Nagchu prefecture 那曲地区, central Tibet |
| 双湖特别区 | Shuāng hú tè bié qū | Shuanghu special district, Tibetan: Mtsho gnyis don gcod khru'u, in Nagchu prefecture 那曲地区, central Tibet |
| 双溪 | Shuāng xī | Shuanghsi township in Taipei county 台北县, Taiwan |
| 双溪乡 | Shuāng xī xiāng | Shuanghsi township in Taipei county 台北县, Taiwan |
| 双滦 | Shuāng luán | Shuangluan district of Chengde city 承德市, Hebei |
| 双滦区 | Shuāng luán qū | Shuangluan district of Chengde city 承德市, Hebei |
| 双牌 | Shuāng pái | Shuangpai county in Yongzhou 永州, Hunan |
| 双牌县 | Shuāng pái xiàn | Shuangpai county in Yongzhou 永州, Hunan |
| 双独 | shuāng dú | double and single; allowed dispensation to have second child |
| 双独夫妇 | shuāng dú fū fù | a married couple allowed dispensation to have second child |
| 双球菌 | shuāng qiú jūn | diplococcus |
| 双生兄弟 | shuāng shēng xiōng dì | twin brothers |
