In this paper, we discussed the transition selection rule of electrical dipole radiation in atom physics by the parity theory and angular momentum theory in quantum.

本文利用量子力学的宇称理论和角动量理论，对原子物理学中所熟知的电偶极辐射的跃迁选择定则进行了理论探讨。

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According to the theory of general relativity, the speed and angular momentum of such a large spinning body twists the space and time around it in a process called frame-dragging.

根据爱因斯坦的广义相对论，像银河系这样的巨大自旋物体的速率和角动量在一个称为框架牵引的过程中会扭曲周围的时空。

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The fractional angular momentum would lead to the fractional quantization of magnetic flux which does not contradict the theory of superconductivity and the result of previous experiments.

分数角动量的存在必然导致分数磁通量子化，而分数磁通量子化和超导理论以及迄今为止的实验结果不相矛盾。

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