“chestnut coal”的概念、定义、翻译、参考文献-科学参考

单词	chestnut coal
释义	chestnut coal [`ches´nǝt ´kōl] ^GEOLOGY Anthracite coal small enough to pass through a round mesh of 1⁵/₈ inches (4.13 centimeters) but too large to pass through a round mesh of 1¹/₁₆ inches (3.02 centimeters).
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