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backup power : 27 phrases in 18 subjects |
| Astronautics | 2 |
| Automated equipment | 1 |
| Computer networks | 3 |
| Construction | 1 |
| Electrical engineering | 2 |
| Energy industry | 1 |
| Household appliances | 1 |
| Information security and data protection | 1 |
| Information technology | 2 |
| Makarov | 1 |
| Oil and gas | 1 |
| Security systems | 3 |
| Space | 1 |
| Technology | 3 |
| Telecommunications | 1 |
| Tengiz | 1 |
| United Nations | 1 |
| Water resources | 1 |