 |
| |||
| próba twardości | |||
|
испытание твёрдости : 16 phrases in 5 subjects |
| Chemistry | 1 |
| Construction | 2 |
| Machine components | 2 |
| Metallurgy | 6 |
| Technology | 5 |
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