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задержка эхо-сигнала (oleg.vigodsky) |
echo delay : 18 phrases in 11 subjects |
Antennas and waveguides | 1 |
Computers | 1 |
Geophysics | 1 |
Makarov | 2 |
Mass media | 3 |
Metallurgy | 1 |
Military | 1 |
Nautical | 1 |
Radioengineering | 1 |
Technology | 2 |
Telecommunications | 4 |