angular momentum density

例句：

1. 1.The angular momentum of the system is crucial for its stability.
   系统的角动量对于其稳定性至关重要。
2. 2. The angular momentum of the planets is determined by their masses and distances from the sun.
   行星的角动量由它们的质量和与太阳的距离决定。
3. 3.The angular momentum of the Earth's rotation can affect the climate on Earth's surface.
   地球自转的角动量会影响地表的气候。