英语词汇“selection rule”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	selection rule
释义	selection rule noun : a rule that states which of all the conceivable changes in the state of a quantized system (atoms, nuclei, or related entities) are physically possible under specified circumstances usually in terms of the possible numerical changes in the quantum numbers that characterize the system — compare allowed, forbidden
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