 |
| |||
| backup battery; secondary battery | |||
| extra battery | |||
| spare battery; standby battery | |||
| reserve battery; reserve cell | |||
| emergency cell | |||
| stand-by battery; battery backup | |||
| |||
| battery backup | |||
| |||
| emergency battery | |||
| 备 用 电池: 22 phrases in 10 subjects |
| Agriculture | 1 |
| Automobiles | 3 |
| Aviation | 1 |
| Business | 3 |
| Earth sciences | 1 |
| Electronics | 3 |
| Metallurgy | 2 |
| Oil / petroleum | 1 |
| Racing and motorsport | 1 |
| Technology | 6 |