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词汇 roentgenium
释义

roentgenium

noun
/ˌrɒntˈɡiːniəm/
/ˌrentˈɡiːniəm/
[uncountable]
(symbol Rg)
  1. a chemical element. Roentgenium is a radioactive element that is produced artificially and has no known use.錀(一种人工合成的放射性化学元素)
    • the discovery and naming of roentgenium伦琴的发现和命名
    • Roentgenium has no stable isotopes.伦琴没有稳定的同位素。
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