用对称性原理推导力学守恒定律

Deducing the Law of Conservation of Mechanlcs from the Symmetry Principle

本文在宏观经典力学范畴内，利用对称性原理，从时间平移不变性推出机械能守恒定律，从空间平移不变性推出动量守恒定律，从空间旋转不变性推出角动量守恒定律。

The dissertation discusses the symmetry principle within the domain of macroscopic classical mechandics. attempting to deduce the law of conservation of mechanical energy from the invariane property in time translation,the law of mementum from the invariance property in space translation and the law of conservation of argular momentum from the invariance property in space rotation.