 |
| 方位角: 413 phrases in 23 subjects |
| Antennas and waveguides | 3 |
| Astronautics | 6 |
| Aviation | 16 |
| Cartography | 3 |
| Drilling | 1 |
| Electronics | 6 |
| General | 54 |
| Geology | 10 |
| Helicopters | 2 |
| Household appliances | 1 |
| Mathematics | 1 |
| Military | 58 |
| Missiles | 1 |
| Nautical | 3 |
| Nuclear and fusion power | 1 |
| Oil / petroleum | 1 |
| Oil and gas | 7 |
| Oilfields | 1 |
| Radio | 1 |
| Radiolocation | 1 |
| Seismology | 9 |
| Shipbuilding | 5 |
| Technology | 222 |