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pulse-jet : 31 phrases in 13 subjects |
| Aerohydrodynamics | 2 |
| Astronautics | 3 |
| Aviation | 4 |
| Construction | 2 |
| Energy industry | 6 |
| Geophysics | 1 |
| Gyroscopes | 1 |
| Mass media | 1 |
| Military | 1 |
| Missiles | 1 |
| Natural resourses and wildlife conservation | 1 |
| Security systems | 1 |
| Technology | 7 |