selection principle

• 选择原则

selection principle的用法和样例：

例句

1. The principles for selection of adsorbate are discussed.
   并讨论了吸附质的选择原则。
2. Selection principle on the squeezing casting techniques was discussed.
   论述了挤压铸造技术方案的选择原则。
3. 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。
4. The relaxation of Raman selection rules in cubic nanophase is attributed to local rhombohedral distortion.
   拉曼选择定则的弛豫源于纳米晶基体具有局域三方晶格畸变。