angular momentum operator

例句：

1. 1. The angular momentum operator isa crucial concept in quantum mechanics.
   角动量算子是量子力学中一个至关重要的概念。
2. 2. In the study of celestial mechanics, understanding theangular momentum operator is essential.
   在天体物理学研究中，理解角动量算子是至关重要的。
3. 3. The angular momentum operatorhelps us to understand how objects move andinteract with each other.
   角动量算子帮助我们理解物体如何移动和相互影响。