 |
| difference equations: 44 phrases in 15 subjects |
| Aerohydrodynamics | 1 |
| Astronautics | 2 |
| Automated equipment | 1 |
| Electrical engineering | 2 |
| Electronics | 2 |
| Energy industry | 1 |
| Information technology | 2 |
| Makarov | 1 |
| Mathematics | 20 |
| Mechanics | 1 |
| Nanotechnology | 1 |
| Physics | 5 |
| Programming | 1 |
| Technology | 3 |
| Transport | 1 |