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单词
bottom quark
释义
WordReference Random House Unabridged Dictionary of American English © 2024
bot
′
tom quark′,
[
Physics.
]
Physics
the quark having electric charge -1/3 times the elementary charge and bottom quantum number -1. It is more massive than the up, down, strange, and charmed quarks. Also called
beauty quark, b quark, b-quark.
1975–80
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t/l
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更新时间:2026/7/3 10:58:25