 |
| |||
| frecuencia de características | |||
|
frequência de características : 16 phrases in 5 subjects |
| Communications | 7 |
| Electronics | 4 |
| Information technology | 3 |
| Mechanic engineering | 1 |
| Piezoelectric crystals | 1 |
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