 |
| |||
| 钻井液体系 | |||
| drilling fluid system: 10 phrases in 5 subjects |
| Chemistry | 2 |
| Drilling | 1 |
| Earth sciences | 1 |
| Oil / petroleum | 5 |
| Technology | 1 |
|
| |||
| 钻井液体系 | |||
| drilling fluid system: 10 phrases in 5 subjects |
| Chemistry | 2 |
| Drilling | 1 |
| Earth sciences | 1 |
| Oil / petroleum | 5 |
| Technology | 1 |