 |
| |||
| 端部加厚的钻杆; 加厚钻探管 | |||
| upset drill pipe: 14 phrases in 4 subjects |
| Drilling | 2 |
| Metallurgy | 3 |
| Oil / petroleum | 4 |
| Technology | 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