 |
| impedance characteristic: 52 phrases in 13 subjects |
| Antennas and waveguides | 11 |
| Electrical engineering | 2 |
| Electronics | 11 |
| Geophysics | 2 |
| Household appliances | 2 |
| Information technology | 2 |
| Internet | 1 |
| Makarov | 3 |
| Mass media | 2 |
| Nanotechnology | 1 |
| Physics | 1 |
| Technology | 10 |
| Telecommunications | 4 |