 |
| sandwich structure: 36 phrases in 9 subjects |
| Astronautics | 7 |
| Electronics | 1 |
| Firefighting and fire-control systems | 1 |
| Forestry | 1 |
| Information technology | 1 |
| Makarov | 1 |
| Nanotechnology | 22 |
| Technology | 1 |
| Welding | 1 |
|
| sandwich structure: 36 phrases in 9 subjects |
| Astronautics | 7 |
| Electronics | 1 |
| Firefighting and fire-control systems | 1 |
| Forestry | 1 |
| Information technology | 1 |
| Makarov | 1 |
| Nanotechnology | 22 |
| Technology | 1 |
| Welding | 1 |