|
frequency-change : 45 phrases in 18 subjects |
| Acoustics | 1 |
| Automated equipment | 2 |
| Automobiles | 1 |
| Aviation | 4 |
| Electrical engineering | 1 |
| Electronics | 6 |
| Energy industry | 2 |
| Geophysics | 2 |
| Household appliances | 1 |
| Information security and data protection | 2 |
| Makarov | 3 |
| Mass media | 2 |
| Military | 4 |
| Radioengineering | 2 |
| Security systems | 1 |
| Technology | 4 |
| Telecommunications | 6 |
| Transport | 1 |