 |
| switching circuit: 219 phrases in 24 subjects |
| Astronautics | 7 |
| Automated equipment | 6 |
| Automobiles | 2 |
| Caspian | 1 |
| Communications | 2 |
| Computer networks | 4 |
| Computers | 5 |
| Construction | 1 |
| Electrical engineering | 18 |
| Electricity | 1 |
| Electronics | 26 |
| Energy industry | 1 |
| Energy system | 1 |
| Information technology | 13 |
| Makarov | 31 |
| Mass media | 8 |
| Mathematics | 2 |
| Microsoft | 1 |
| Military | 13 |
| Natural resourses and wildlife conservation | 1 |
| Programming | 2 |
| Security systems | 1 |
| Technology | 55 |
| Telecommunications | 17 |