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单词 brown lignite
释义 brown lignite
[¦brau̇n `lig´nīt]
GEOLOGY
A type of lignite with a fixed carbon content ranging from 30 to 55% and total carbon from 65 to 73.6; contains 6300 Btu per pound (14.65 megajoules per kilogram). Also known as lignite B.
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