 |
| |||
| signal reflected from the Earth's surface (Konstantin 1966) | |||
| отражённый от земной поверхности сигнал: 6 phrases in 4 subjects |
| Aviation | 2 |
| Electronics | 2 |
| General | 1 |
| Radio | 1 |
|
| |||
| signal reflected from the Earth's surface (Konstantin 1966) | |||
| отражённый от земной поверхности сигнал: 6 phrases in 4 subjects |
| Aviation | 2 |
| Electronics | 2 |
| General | 1 |
| Radio | 1 |