 |
| |||
| optical path | |||
| путь оптического луча: 5 phrases in 5 subjects |
| Astronomy | 1 |
| Aviation | 1 |
| Household appliances | 1 |
| Mass media | 1 |
| Nautical | 1 |
|
| |||
| optical path | |||
| путь оптического луча: 5 phrases in 5 subjects |
| Astronomy | 1 |
| Aviation | 1 |
| Household appliances | 1 |
| Mass media | 1 |
| Nautical | 1 |