 |
| |||
| 定向井钻进方位 | |||
| drilling phase: 6 phrases in 5 subjects |
| Earth sciences | 1 |
| Geophysics | 1 |
| Navigation | 1 |
| Oil / petroleum | 1 |
| Technology | 2 |
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