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单词
up quark
释义
WordReference Random House Unabridged Dictionary of American English © 2024
up
′
quark′,
[
Physics.
]
Physics
the quark having electric charge 2/3 times the elementary charge and strangeness and charm equal to 0. Also called
u quark.
1975–80
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更新时间:2026/8/15 17:37:53