 |
| |||
| open well | |||
| 普 通 井: 19 phrases in 6 subjects |
| Bridge construction | 1 |
| Drilling | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Geophysics | 1 |
| Oil / petroleum | 5 |
| Technology | 10 |
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