conservation of angular momentum的用法和樣例：
例句
- Angular momentum conservation is based on the isotropy of space.
角動量守恆是以空間的各向同性為基礎的。 - By analyzing a wrong answer of Conservation Law of Angular Momentum, this paper points out that the main renson of the answer, and it gaives out two kinds of correct answers.
摘要通過對一個角動量守恆問題錯誤解法的分析，指出錯誤產生的主要原因，然後分別用兩種方法給出該題的解法。
