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单词 unnilpentium
释义

WordReference Random House Unabridged Dictionary of American English © 2024
un•nil•pen•ti•um  (yo̅o̅′nil pentē əm),USA pronunciation n. 
  1. Chemistry, Physics, Physicsprovisional name for the transuranic element with atomic number 105. Symbol: Unp  Also called element 105, hahnium. 
  • Latin ūn(us) one + nīl nothing + Greek pént(e) five + Neo-Latin -ium -ium
  • 1975–80

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