 |
| 方向线: 222 phrases in 22 subjects |
| Antennas and waveguides | 8 |
| Artillery | 1 |
| Astronautics | 1 |
| Astronomy | 2 |
| Aviation | 4 |
| Cartography | 3 |
| Electronics | 14 |
| Forestry | 1 |
| General | 35 |
| Geology | 3 |
| Mathematics | 4 |
| Melioration | 1 |
| Military | 15 |
| Missiles | 2 |
| Nautical | 4 |
| Oil and gas | 1 |
| Oil processing plants | 2 |
| Radio | 3 |
| Rail transport | 2 |
| Technology | 111 |
| Telecommunications | 4 |
| Welding | 1 |