 |
| |||
| низкая проницаемость | |||
| faible perméabilité: 5 phrases in 4 subjects |
| Chemistry | 1 |
| Construction | 1 |
| Hydraulic engineering | 2 |
| Oil and gas technology | 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