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| lignite Coal of relatively recent origin consisting of accumulated layers of partially decomposed vegetation, intermediate between peat and bituminous coal; often contains patterns from the wood from which it formed | |||
| wood coal | |||
| brown coal | |||
| lignite | |||
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lignito : 57 phrases, 13 sujets |
| Charbon | 20 |
| Chimie | 5 |
| Électronique | 1 |
| Environnement | 5 |
| Forage | 4 |
| Général | 1 |
| Génie mécanique | 1 |
| Géologie | 1 |
| Industrie | 2 |
| Industrie de l'énergie | 10 |
| Pétrole / pétrole | 2 |
| Sciences de la vie | 2 |
| Statistiques | 3 |