 |
|
dynamic error : 23 phrases in 15 subjects |
| Air defense | 1 |
| Astronautics | 3 |
| Caspian | 1 |
| Computers | 2 |
| Electronics | 1 |
| Gyroscopes | 1 |
| Makarov | 1 |
| Mass media | 1 |
| Mathematics | 1 |
| Medical appliances | 1 |
| Military | 1 |
| Non-destructive testing | 1 |
| Radioengineering | 1 |
| Soviet | 2 |
| Technology | 5 |