英语词汇“root 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	root coal
释义	> as lemmas root coal † root coal n. Obsolete rare a type of coal in which the form of the roots of the trees from which it originated can be distinguished. ΚΠ 1808 C. Vancouver Gen. View Agric. Devon i. 71 The root coal has a broken and wavy texture. 1814 Edinb. Encycl. (1830) VII. at Devonshire A strong appearance of the trunks and roots of the Scotch fir may be traced in the root coal. extracted from rootn.¹ < as lemmas
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