 |
| |||
| backward semisphere | |||
| aft aircraft quadrant (ЛА) | |||
| rear-hemisphere (Alex_Odeychuk) | |||
| задняя полусфера: 43 phrases in 9 subjects |
| Astronautics | 5 |
| Aviation | 22 |
| Lasers | 1 |
| Military | 9 |
| Military aviation | 1 |
| Missiles | 1 |
| Nanotechnology | 2 |
| Nuclear and fusion power | 1 |
| Technology | 1 |