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单词 lawrencium
释义

WordReference Random House Unabridged Dictionary of American English © 2024
law•ren•ci•um  (lô ren′sē əm),USA pronunciation n. [Chem.]
  1. Chemistrya synthetic, radioactive, metallic element. Symbol: Lr;
    at. no.: 103.
  • Lawrence Radiation Laboratory, Berkeley, California + -ium 1960–65

Collins Concise English Dictionary © HarperCollins Publishers::
lawrencium /lɒˈrɛnsɪəm lɔː-/ n
  1. a transuranic element artificially produced from californium. Symbol: Lr; atomic no: 103; half-life of most stable isotope, 256Lr: 35 seconds; valency: 3
Etymology: 20th Century: named after Ernest Orlando Lawrence (1901–58), US physicist
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