 |
| |||
| light transmitting (Александр Рыжов) | |||
| propagation | |||
| light transmission | |||
| passage of light | |||
| pass of light; light passage | |||
| прохождение света: 17 phrases in 5 subjects |
| Aerohydrodynamics | 4 |
| Cables and cable production | 1 |
| Mass media | 10 |
| Mechanics | 1 |
| Security systems | 1 |