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neptunium

/nep'tju:niәm/

📖 中文释义

  1. n. 镎
  2. [化] 镎Np
📘 English Definition（英文释义）
  1. n. a radioactive transuranic metallic element; found in trace amounts in uranium ores; a by-product of the production of plutonium
N 字母词表