| 双 |
shuāng jiàn | double bond (chemistry) |
| 双 |
shuāng | variant of 双 |
| 双 |
Shuāng | surname Shuang |
| 双 |
shuāng | two / double / pair / both / even (number) |
| 键 |
jiàn | key (on a piano or computer keyboard) / button (on a mouse or other device) / chemical bond / linchpin |