 |
| mean free path: 41 phrases in 6 subjects |
| Construction | 1 |
| Earth sciences | 4 |
| Nuclear physics | 3 |
| Physics | 17 |
| Technology | 1 |
| Радиоактивное излучение | 15 |
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