two -way communications : 38 phrases in 17 subjects |
Astronautics | 2 |
Aviation | 1 |
Communications | 2 |
Computer networks | 3 |
Computers | 1 |
Electronics | 1 |
General | 1 |
Information technology | 1 |
Mass media | 1 |
Military | 4 |
Nautical | 1 |
Programming | 3 |
Sakhalin | 2 |
Security systems | 2 |
Technology | 5 |
Telecommunications | 6 |
Weapons of mass destruction | 2 |