 |
| |||
| formation packer | |||
|
地层 封隔 器 : 5 phrases in 4 subjects |
| Drilling | 1 |
| Mechanics | 1 |
| Mining | 1 |
| 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