celtium

名词 n.
中文释义

英文释义

名词 n.
  1. The name originally proposed for element 72, now called hafnium; the discoverer, Georges Urbain, conjectured it to be a rare earth element, and proposed the symbol Ct; but subsequent work showed it to be a transition element, and hafnium was given the symbol Hf. historical,uncountable
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