| 单词 | lignite |
| 释义 | Word Frequency lignite(ˈlɪɡnaɪt) noun a brown carbonaceous sedimentary rock with woody texture that consists of accumulated layers of partially decomposed vegetation: used as a fuel. Fixed carbon content: 46–60 per cent; calorific value: 1.28 × 107 to 1.93 × 107J/kg (5500 to 8300 Btu/lb) Also called: brown coalDerived forms lignitic (lɪɡˈnɪtɪk) adjective |
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