 |
| |||
| difficult (igisheva); hard-to-recover (igisheva) | |||
| |||
| difficult (oil resources whose production is problematic; запасы); problematic (запасы) | |||
| трудноизвлекаемый: 23 Phrasen in 7 Thematiken |
| Allgemeine Lexik | 1 |
| Erdöl | 3 |
| Erdöl und Erdgas | 10 |
| Erdöl- und Erdgastechnik | 1 |
| Erdölindustrie | 4 |
| Sachalin | 2 |
| Tengiz | 2 |