 |
| |||
| 同时开采两层的井 | |||
| 双层分釆井 | |||
| |||
| 双层出油井 | |||
|
dual-zone well : 2 phrases in 1 subject |
| Oil / petroleum | 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