technetium / tɛkˈni ʃi əm, -ʃəm /

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technetium 的定义

n. 名词 noun
  1. Chemistry. an element of the manganese family, not found in nature, but obtained in the fission of uranium or by the bombardment of molybdenum. Symbol: Tc; atomic weight: 99; atomic number: 43; specific gravity: 11.5.