|
headset : 92 phrases in 23 subjects |
| Acoustics | 2 |
| Armored vehicles | 1 |
| Astronautics | 9 |
| Audio electronics | 1 |
| Aviation | 3 |
| Communications | 3 |
| Computers | 5 |
| Cycling other than sport | 2 |
| Electrical engineering | 1 |
| Electronics | 8 |
| General | 6 |
| Hi-Fi | 3 |
| Information security and data protection | 1 |
| Information technology | 4 |
| Makarov | 1 |
| Mass media | 2 |
| Military | 2 |
| Mobile and cellular communications | 2 |
| Multimedia | 1 |
| Security systems | 3 |
| Technology | 7 |
| Telecommunications | 22 |
| Telephony | 3 |