| |||
| уровень эхо-сигнала (oleg.vigodsky) | |||
|
echo level : 7 phrases in 4 subjects |
| Electronics | 1 |
| Mass media | 2 |
| Military | 1 |
| Telecommunications | 3 |
| |||
| уровень эхо-сигнала (oleg.vigodsky) | |||
|
echo level : 7 phrases in 4 subjects |
| Electronics | 1 |
| Mass media | 2 |
| Military | 1 |
| Telecommunications | 3 |