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单词 tonstein
释义

tonstein /'tɔnstain/

英汉-汉英词典
n. 白土石
词组 | 习惯用语
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tonstein n. [地质] 白土石

网络短语:
kaolin-coal tonstein 高岭石泥岩
tonstein belt 夹矸带
tonstein coal seam 夹矸煤层
英语例句库
  1. The kaolinite tonstein in the seam 5# is formed by acidic ash alterated in the acid medium in peat bog in tongchuan district.
    铜川矿区5#煤层中的高岭石泥岩夹矸是由酸性火山灰在近地表的成煤条件下经酸性水淋滤、蚀变而成的。

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英语百科

Tonstein

Tonstein (from the German "Ton", meaning clay, plus "Stein", meaning rock) is a hard, compact sedimentary rock that is composed mainly of kaolinite or, less commonly, other clay minerals such as montmorillonite and illite. The clays often are cemented by iron oxide minerals, carbonaceous matter, or chlorite. Tonsteins form from volcanic ash deposited in swamps.

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