英语词汇“jet coal”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	jet coal
释义	jet coal jet coal [′jet ¦kōl] (geology) A hard, lustrous, pure black variety of lignite, occurring in isolated masses in bituminous shale; thought to be derived from waterlogged driftwood. Also known as black amber.
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