interference filter: 47 phrases in 20 subjects |
Antennas and waveguides | 1 |
Astronautics | 4 |
Astronomy | 3 |
Aviation | 3 |
Electrical engineering | 1 |
Electronics | 5 |
Makarov | 1 |
Mass media | 1 |
Medical appliances | 1 |
Metrology | 1 |
Microscopy | 1 |
Nanotechnology | 4 |
Navigation | 1 |
Optics branch of physics | 1 |
Physics | 3 |
Radio | 1 |
Sakhalin | 1 |
Technology | 11 |
Telecommunications | 2 |
Transport | 1 |