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单词
francium
释义
fran·cium
BrE
/
ˈfrænsiəm
/
NAmE
/
ˈfrænsiəm
/
noun
[
U
]
(
symbol
Fr
)
a
chemical
element
.
Francium
is
a
radioactive
metal
钫(放射性化学元素)
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更新时间:2026/10/4 10:20:10