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单词
arkosic bentonite
释义
arkosic bentonite
arkosic bentonite
[
är′kōs·ik ′ben·tə‚nīt
]
(petrology)
Bentonite derived from volcanic ash which contains 25-75% sandy impurities and whose detrital crystalline grains remain essentially unaltered. Also known as sandy bentonite.
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directorate general for economic and financial affairs
directorate-general for economic and financial affairs
directorate-general for the environment
directorate-general for translation
directorate general for transport and energy
directorate-general medicinal products
directorate general of customs and excise
directorate-general of food
directorate general of geology and mineral resources
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更新时间:2025/3/19 2:27:24