good quantum number

例句：

1. 1.In quantum mechanics, the concept of a good quantum number is crucial for understanding the behavior of particles.
   在量子力学中，好的量子数的概念对于理解粒子的行为至关重要。
2. 2. The good quantum number system has been widely used in various fields, such as chemistry andphysics.
   好的量子数系统在化学和物理学的各个领域都有广泛的应用。
3. 3. The good quantum number system is based on the principle of conservation of energy, which is fundamentalto the study of quantum mechanics.
   好的量子数系统基于能量守恒的原理，这是量子力学研究的基础。