| |||
| частотная характеристика затухания | |||
|
frequency attenuation characteristic : 3 phrases in 2 subjects |
| Mass media | 2 |
| Telecommunications | 1 |
| |||
| частотная характеристика затухания | |||
|
frequency attenuation characteristic : 3 phrases in 2 subjects |
| Mass media | 2 |
| Telecommunications | 1 |