 |
| |||
| intrinsic frequency | |||
|
внутренняя частота : 12 phrases in 4 subjects |
| Electronics | 2 |
| Mass media | 7 |
| Metrology | 1 |
| Programming | 2 |
The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Add | The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Report an error
| Get short URL | Language Selection Tips