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brown lignite
释义
brown lignite
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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更新时间:2025/12/19 14:39:38