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单词
b-c meson
释义
B-c meson
B-c meson
B5128350
(bē′sē′)
n.
A positively charged meson composed of a charm quark and a bottom antiquark and having a mass about 12,300 times that of an electron and a mean lifetime of about 4.6 × 10
-13
second.
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pch1b
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更新时间:2025/7/25 15:53:41