| |||
| многочастотный код | |||
|
multifrequency code : 6 phrases in 3 subjects |
| Electronics | 1 |
| Household appliances | 2 |
| Telecommunications | 3 |
| |||
| многочастотный код | |||
|
multifrequency code : 6 phrases in 3 subjects |
| Electronics | 1 |
| Household appliances | 2 |
| Telecommunications | 3 |