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单词 grey manganese
释义

Definition of grey manganese in English:

grey manganese

(US gray manganese)
noun
Mining rare
  • (Also "grey manganese ore") either of two minerals containing manganese, manganite and pyrolusite.

Origin

Late 18th century.

Definition of grey manganese in US English:

grey manganese

(US gray manganese)
noun
Mining rare
  • (Also "grey manganese ore") either of two minerals containing manganese, manganite and pyrolusite.

Origin

Late 18th century.

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更新时间:2024/9/21 15:38:36