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单词
proton
释义
proton
pro
ton
/
ˈproʊtɑn
/
noun
[countable]
Etymology
ETYMOLOGY
proton
Origin:
1800-1900
Greek
first thing
, from
protos
; ➔
PROTO-
science
,
physics
a
particle
that exists in the
nucleus
(=
central part
)
of an atom, and that has a positive electrical charge
→
electron
,
neutron
随便看
valiant
valid
validate
validated parking
validation
validity
valise
Valium
Valkyrie
Valletta
valley
Valley Forge
Valois
valor
valorous
valuable
valuables
valuation
value
value-added
value-added reseller
value-added tax
valued
value judgment
valueless
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更新时间:2025/10/18 20:59:45