 |
| |||
| 钻头喷嘴 | |||
| 钻头钻管; 钻头水眼 | |||
|
bit nozzle : 10 phrases in 3 subjects |
| Drilling | 4 |
| Earth sciences | 1 |
| Oil / petroleum | 5 |
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