 |
| |||
| carbonaceous | |||
|
石炭的 : 7 phrases in 4 subjects |
| Engineering geology | 1 |
| General | 4 |
| Geology | 1 |
| 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