 |
| |||
| spectre lumineux | |||
| spectre du visible (I. Havkin) | |||
| spectre visible | |||
| спектр видимого излучения: 5 phrases in 5 subjects |
| Astronautics | 1 |
| Electronics | 1 |
| Physics | 1 |
| Radio | 1 |
| Technology | 1 |
|
| |||
| spectre lumineux | |||
| spectre du visible (I. Havkin) | |||
| spectre visible | |||
| спектр видимого излучения: 5 phrases in 5 subjects |
| Astronautics | 1 |
| Electronics | 1 |
| Physics | 1 |
| Radio | 1 |
| Technology | 1 |