частотный фильтр: 68 phrases in 13 subjects |
Antennas and waveguides | 1 |
Aviation | 2 |
Electrical engineering | 25 |
Electricity | 1 |
Electronics | 9 |
Geophysics | 2 |
Makarov | 1 |
Mass media | 13 |
Nanotechnology | 3 |
Quantum electronics | 2 |
Radio | 1 |
Technology | 7 |
Telecommunications | 1 |