“orthobituminous coal”的概念、定义、翻译、参考文献-科学参考

单词	orthobituminous coal
释义	orthobituminous coal [¦ȯr·thō·bǝ`tü·mǝn·ǝs `kōl] ^GEOLOGY Bituminous coal that contains 87-89% carbon, analyzed on a dry, ash-free basis.
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