 |
| ablative materials: 14 phrases in 6 subjects |
| Astronautics | 4 |
| Aviation | 1 |
| Construction | 1 |
| Firefighting and fire-control systems | 5 |
| Makarov | 1 |
| Technology | 2 |
|
| ablative materials: 14 phrases in 6 subjects |
| Astronautics | 4 |
| Aviation | 1 |
| Construction | 1 |
| Firefighting and fire-control systems | 5 |
| Makarov | 1 |
| Technology | 2 |