 |
| |||
| kelly rotary bushing | |||
| KB (kelly bushing) | |||
| RDB (rotary drive bushing); kelly drive bushing (штангу); rotary drive bushing; kelly bushing (штангу andrushin) | |||
| вкладыш ротора под ведущую трубу: 10 phrases, 2 sujets |
| Pétrole / pétrole | 6 |
| Technologie | 4 |
|
| |||
| kelly rotary bushing | |||
| KB (kelly bushing) | |||
| RDB (rotary drive bushing); kelly drive bushing (штангу); rotary drive bushing; kelly bushing (штангу andrushin) | |||
| вкладыш ротора под ведущую трубу: 10 phrases, 2 sujets |
| Pétrole / pétrole | 6 |
| Technologie | 4 |