| |||
| скорость распространения волны | |||
|
velocity of wave propagation : 2 phrases in 2 subjects |
| Household appliances | 1 |
| Technology | 1 |
| |||
| скорость распространения волны | |||
|
velocity of wave propagation : 2 phrases in 2 subjects |
| Household appliances | 1 |
| Technology | 1 |