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| pit coal | |||
| black coal; coal The natural, rocklike, brown to black derivative of forest-type plant material, usually accumulated in peat beds and progressively compressed and indurated until it is finally altered in to graphite-like material; black coal A natural black graphitelike material used as a fuel, formed from fossilized plants and consisting of amorphous carbon with various organic and some inorganic compounds | |||
| hard coal | |||
| coal | |||
| |||
| hard coal; pit coal | |||
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steenkool : 51 phrases, 11 sujets |
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| Chimie | 11 |
| Économie | 1 |
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| Général | 3 |
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| Industrie de l'énergie | 11 |
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