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单词 atomic number 43
释义
atomic number 43
(extremely rare)
n

WORD FAMILY
atomic number 43
n a crystalline metallic element not found in nature; occurs as one of the fission products of uranium
Syn|Hyper
Tc, technetium
metal, metallic element
any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
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更新时间:2024/11/11 13:46:16