最終更新日:2024/07/29
Charmonium is a subatomic particle composed of a charm quark and an anticharm quark.
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Charmonium is a subatomic particle composed of a charm quark and an anticharm quark.
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Charmonium is a subatomic particle composed of a charm quark and an anticharm quark.
Charmonium is a subatomic particle composed of a charm quark and an anticharm quark.