 |
| |||
| камертонный генератор | |||
|
fork oscillator : 6 phrases in 4 subjects |
| Aviation | 1 |
| Electrical engineering | 1 |
| Household appliances | 1 |
| Technology | 3 |
|
| |||
| камертонный генератор | |||
|
fork oscillator : 6 phrases in 4 subjects |
| Aviation | 1 |
| Electrical engineering | 1 |
| Household appliances | 1 |
| Technology | 3 |