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单词
fine-structure constant
释义
fine-structure constant
\¦ ̷ ̷ ˈ ̷ ̷ ̷ ̷ -\
noun
:
a dimensionless constant that is a measure of the strength of electromagnetic interactions of subatomic particles and that has an approximate value of 0.0073 or 1/137
— symbol α
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更新时间:2025/10/8 18:56:00