 |
| |||
| voice frequency | |||
| звуковая несущая частота: 19 phrases in 6 subjects |
| Astronautics | 1 |
| Electronics | 7 |
| Household appliances | 2 |
| Mass media | 5 |
| Technology | 3 |
| Television | 1 |
|
| |||
| voice frequency | |||
| звуковая несущая частота: 19 phrases in 6 subjects |
| Astronautics | 1 |
| Electronics | 7 |
| Household appliances | 2 |
| Mass media | 5 |
| Technology | 3 |
| Television | 1 |