 |
| |||
| 孔内残留岩芯 | |||
| lost core: 8 phrases in 3 subjects |
| Automobiles | 3 |
| Hydroelectric power stations | 1 |
| Technology | 4 |
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