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direction indicator : 91 phrases in 23 subjects |
| Aeronautics | 1 |
| Air defense | 1 |
| Antennas and waveguides | 1 |
| Astronautics | 2 |
| Automobiles | 17 |
| Aviation | 9 |
| Construction | 1 |
| Drilling | 2 |
| Electrical engineering | 3 |
| Electronics | 7 |
| General | 1 |
| Geophysics | 1 |
| Gyroscopes | 1 |
| Hydrology | 1 |
| Makarov | 1 |
| Meteorology | 6 |
| Military | 16 |
| Nautical | 1 |
| Nuclear physics | 1 |
| Oil / petroleum | 1 |
| Space | 2 |
| Technology | 13 |
| Transport | 2 |