"Back-up" • Chinese-English Dictionary
| 后援 | hòu yuán | reinforcement / back-up / supporting force |   |
| 后备用品 | hòu bèi yòng pǐn | back-up supply | |
| 二级标记 | secondary marking / back-up marking / covert marking | | |
| 后备标记 | secondary marking / back-up marking / covert marking | | |
| 后备线路 | back-up line | | |
| 备用辐射安全系统 | back-up radiation safety system | | |
| 备用飞行控制子系统 | back-up flight control sub-system | | |
| 备用自行解除待发状态装置 | back-up self-deactivation feature | |
