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单词
subbituminous coal
释义
subbituminous coal
subbituminous coal
[
¦səb·bə′tü·mə·nəs ′kōl
]
(geology)
Black coal intermediate in rank between lignite and bituminous coal; has more carbon and less moisture than lignite.
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更新时间:2025/3/11 8:03:14