| |||
| первичное регулирование частоты (MichaelBurov) | |||
|
primary frequency control : 4 phrases in 2 subjects |
| Energy industry | 3 |
| General | 1 |
| |||
| первичное регулирование частоты (MichaelBurov) | |||
|
primary frequency control : 4 phrases in 2 subjects |
| Energy industry | 3 |
| General | 1 |