 |
| |||
| звуковой сигнал (Andrey Truhachev) | |||
| оповещательный сигнал (oleg.vigodsky) | |||
| signal tone: 24 phrases in 9 subjects |
| Communications | 3 |
| General | 1 |
| Mass media | 6 |
| Measuring instruments | 1 |
| Nanotechnology | 1 |
| Programming | 2 |
| Rail transport | 1 |
| Technology | 4 |
| Telecommunications | 5 |