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词汇 niobium
释义

niobium

noun
/naɪˈəʊbiəm/
/naɪˈəʊbiəm/
[uncountable]
(symbol Nb)
  1. a chemical element. Niobium is a silver-grey metal used in steel alloys.
    词源mid 19th cent.: modern Latin, from Niobe, the queen of Thebes in Greek mythology, and by association with her father Tantalus (so named because the element was first found in the rare mineral tantalite).
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