 |
| emergency power system: 15 phrases in 8 subjects |
| Construction | 1 |
| Electrical engineering | 1 |
| Energy industry | 5 |
| Energy system | 1 |
| Military | 1 |
| Nautical | 3 |
| Nuclear and fusion power | 1 |
| Technology | 2 |
|
| emergency power system: 15 phrases in 8 subjects |
| Construction | 1 |
| Electrical engineering | 1 |
| Energy industry | 5 |
| Energy system | 1 |
| Military | 1 |
| Nautical | 3 |
| Nuclear and fusion power | 1 |
| Technology | 2 |