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单词 alum glass
释义

alum glass

now rare
noun
1A glassy form of alum produced especially by evaporating an aqueous solution (now historical ).
2A kind of glass containing alumina.

Origin

Late Middle English. Compare Anglo-Norman alum de glace, alun de glas, Middle French alun de glace, lit. ‘ice alum’ and also Anglo-Norman alomglas; compare further (after French) Middle Dutch aluun van glaetse.

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更新时间:2024/9/21 17:42:09