 |
| backward scattering: 17 phrases in 10 subjects |
| Astronautics | 2 |
| Automated equipment | 1 |
| Makarov | 3 |
| Mass media | 1 |
| Military | 2 |
| Nanotechnology | 1 |
| Nuclear physics | 1 |
| Physics | 1 |
| Technology | 4 |
| Радиоактивное излучение | 1 |
|
| backward scattering: 17 phrases in 10 subjects |
| Astronautics | 2 |
| Automated equipment | 1 |
| Makarov | 3 |
| Mass media | 1 |
| Military | 2 |
| Nanotechnology | 1 |
| Nuclear physics | 1 |
| Physics | 1 |
| Technology | 4 |
| Радиоактивное излучение | 1 |