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

单词	parabituminous coal
释义	parabituminous coal [¦par·ǝ·bǝ`tüm·ǝ·nǝs `kōl] ^GEOLOGY Bituminous coal that contains 84-87% carbon, analyzed on a dry, ash-free basis.
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