| |||
| 套管护箍 | |||
| 钻杆橡胶护箍; 套管护圈; 钻杆橡胶护圈; 套管 | |||
|
casing protector : 8 phrases in 4 subjects |
| Drilling | 3 |
| Mechanics | 1 |
| Oil / petroleum | 2 |
| Technology | 2 |
| |||
| 套管护箍 | |||
| 钻杆橡胶护箍; 套管护圈; 钻杆橡胶护圈; 套管 | |||
|
casing protector : 8 phrases in 4 subjects |
| Drilling | 3 |
| Mechanics | 1 |
| Oil / petroleum | 2 |
| Technology | 2 |