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单词
alpha particle
释义
alpha particle
BrE
/
ˈælfə pɑːtɪkl
/
NAmE
/
ˈælfə pɑːrtɪkl
/
noun
(
specialist
)
the
nucleus
of a
helium
atom; a
particle
with
a
positive
electrical
charge
,
that
is
produced
in
a
nuclear
reaction
* α 粒子
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更新时间:2025/1/9 5:26:02