| |||
| ступенчатое долото | |||
| долото-пилот | |||
|
step bit : 26 phrases in 6 subjects |
| Dentistry | 12 |
| Drilling | 2 |
| Oil / petroleum | 9 |
| Oil and gas | 1 |
| Oil and gas technology | 1 |
| Programming | 1 |
| |||
| ступенчатое долото | |||
| долото-пилот | |||
|
step bit : 26 phrases in 6 subjects |
| Dentistry | 12 |
| Drilling | 2 |
| Oil / petroleum | 9 |
| Oil and gas | 1 |
| Oil and gas technology | 1 |
| Programming | 1 |