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| 腐殖煤 | |||
| 腐植煤 | |||
| 腐殖煤咼等植物遗体，在泥炭沼泽中经泥炭化作用和煤化作用转变成的煤 | |||
| 泥煤 | |||
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humic coal : 10 phrases in 2 subjects |
| Explosives and Explosive Ordnance Disposal | 2 |
| Technology | 8 |
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