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单词
radioactinium
释义
ra·dio·actinium
\“+\
noun
Etymology:
New Latin, from
radio- + actinium
:
the radioactive isotope of thorium of mass number 227 formed by disintegration of actinium
— symbol
RdAc
or
Th
227
; see actinium series
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更新时间:2025/11/2 17:33:16