Actually, these selection rules are not ironclad.
实际上, 这些选择规则并不是严格的.
辞典例句
Forbidden transitions are those for which dipole radiative transitions are not allowed by the selection rules.
禁戒跃迁指的是选择定则所不容许的偶极辐射跃迁.
辞典例句
Teams now respect over age squad selection rules in lower division italian leagues.
球队现在遵守在低级意大利联赛中的超龄球员选择规则.
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