单词 | anthracitic |
例句 | Of, pertaining to, or like, anthracite; as, anthracitic formations. Webster's Unabridged Dictionary 2012-03-24T02:00:23.513Z Taken generally, the coals are bituminous in the south-east and anthracitic in the north-west. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 1 "Gichtel, Johann" to "Glory" 2012-01-11T03:00:20.463Z The proportion of this residue is greatest in the more anthracitic or drier coals, but a more valuable product is yielded by those richer in hydrogen. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 5 "Clervaux" to "Cockade" This is suggested by the fact that in places where hot volcanic lavas have gone through coal beds they have locally produced coals of anthracitic and coke-like varieties. The Economic Aspect of Geology The Graptolites are usually found in dark-coloured, often black shales, which sometimes contain so much carbon as to become "anthracitic." The Ancient Life History of the Earth A Comprehensive Outline of the Principles and Leading Facts of Palæontological Science |
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