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单词 alum ore
释义

Definition of alum ore in English:

alum ore

noun
historical
  • An iron ore or iron-rich rock which contains substantial amounts of alum; specifically = alum shale.

Origin

Early 18th century; earliest use found in Peter Shaw (1694–1763), physician and author.

Definition of alum ore in US English:

alum ore

noun
historical
  • An iron ore or iron-rich rock which contains substantial amounts of alum; specifically = alum shale.

Origin

Early 18th century; earliest use found in Peter Shaw (1694–1763), physician and author.

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更新时间:2025/6/20 4:23:23