 |
| |||
| cantilever derrick; cantilever mast; folding derrick; jack knife derrick; jackknife mast; sectionalized derrick | |||
| jackknife derrick | |||
| 折叠 式 井架: 11 phrases in 2 subjects |
| Drilling | 8 |
| Oil / petroleum | 3 |
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