 |
| bit key: 33 phrases in 13 subjects |
| Automated equipment | 2 |
| Construction | 1 |
| Electricity | 1 |
| General | 6 |
| Information security and data protection | 3 |
| Information technology | 3 |
| Makarov | 1 |
| Nautical | 1 |
| Rail transport | 1 |
| Security systems | 6 |
| Technology | 4 |
| Telecommunications | 3 |
| Transport | 1 |