选择定则，原子能级之间辐射跃迁所遵从的规则。对于给定的体系，实验和理论都表明并不是它的任意两个量子状态之间都可以发生跃迁，跃迁要遵从一定的规律，这种规律用量子数的改变表示出来就是选择定则。
选择定则
网络释义专业释义
高能物理专业英语翻译R-117-SCIdict学术... ... 对称选择定则 rule，parity-selection 选择定则 rule，selection 自旋选择定则 rule，spin-selection ...
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短语
核选择定则 nuclear selection rules
费密选择定则 fermi selection rule
费米选择定则 fermi selection rules ; rules Fermi-selection
宇称选择定则 [量子] parity selection rule
超选择定则 superselection rule
原子光谱选择定则 selection rule for atomic spectra
拉波特选择定则 [核] Laporte selection rule
同位旋选择定则 isotopic-spin selection rule ; rule isotopic-spin selection
自旋选择定则 spin-selection rule ; rule spin-selection
双语例句原声例句
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禁戒跃迁指的是选择定则所不容许的偶极辐射跃迁。
Forbidden transitions are those for which dipole radiative transitions are not allowed by the selection rules.
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由于在凝相中，选择定则是比较不严格的，所以绝对强度往往有所增大。
Frequently the absolute intensity is increased since the selection rules are less strict in the condensed phase.
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定量的给出了球面波照射下实现任意阶非精确分数傅里叶变换时系统参数的选择定则。
A determining law for selecting the parameters of obtaining arbitrary order of the non-exact transform is also deducted quantitatively.
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So there are two electron configurations in the n equals one shell, if we follow according to the selection rules that we spelled out last day.
如果根据上次课,我们阐明的原子光谱选择定则，我们就会知道在n等于1的那一层,有两种电子图像构型。
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