 |
| |||
| reducing | |||
| 缩径 的: 7 phrases in 7 subjects |
| Drilling | 1 |
| Electronics | 1 |
| Engineering geology | 1 |
| General | 1 |
| Mechanics | 1 |
| Oil / petroleum | 1 |
| Technology | 1 |
|
| |||
| reducing | |||
| 缩径 的: 7 phrases in 7 subjects |
| Drilling | 1 |
| Electronics | 1 |
| Engineering geology | 1 |
| General | 1 |
| Mechanics | 1 |
| Oil / petroleum | 1 |
| Technology | 1 |