 |
| |||
| coarse bed | |||
| high; high coal | |||
| thick layer | |||
| thick seam; thick stratum | |||
| high seam; thick bed; heavy layer; thick formation | |||
| heavy bed; high bed | |||
| мощный пласт: 20 phrases, 9 sujets |
| Ciment | 1 |
| Exploitation minière | 4 |
| Géologie | 7 |
| Industrie de l'industr. | 1 |
| Makarov | 1 |
| Pétrole / pétrole | 2 |
| Pétrole et gaz | 1 |
| Technologie | 2 |
| Usines de traitement du gaz | 1 |