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单词
actinon
释义
WordReference Random House Unabridged Dictionary of American English © 2024
ac•ti•non
(ak
′
tə non′),
USA pronunciation
n.
[
Chem.
]
Chemistry
a chemically inert, gaseous, short-lived isotope of radon that is a member of the actinium series.
Symbol:
An;
at. no.:
86;
at. wt.:
219. Also called
actinium emanation.
Neo-Latin; see
actinium,
-
on
2
1925–30
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更新时间:2025/12/12 19:47:19