| |||
| ток низкой частоты | |||
| ток звуковой частоты | |||
|
audio-frequency current : 3 phrases in 3 subjects |
| Electronics | 1 |
| Makarov | 1 |
| Technology | 1 |
| |||
| ток низкой частоты | |||
| ток звуковой частоты | |||
|
audio-frequency current : 3 phrases in 3 subjects |
| Electronics | 1 |
| Makarov | 1 |
| Technology | 1 |