It is explained that the law of conservation of mechanical energy obeys relativity principle of mechanics.
系统地阐明机械能守恒定律无条件服从力学相对性原理。
The reason why the law of mechanical energy can not be satisfy the principle of relativity is the definition of external potential energy; and it is analyzed.
分析了机械能定理不满足力学相对性原理的原因在于外势能的定义，提出了对势能定义的看法。
In this paper it is explained that the law of conservation of mechanical energy must Obey the relativity principle of mechanics.
文章系统地阐明了机械能守恒定律无条件服从力学相对性原理，若总机械能在一个惯性系守恒，它就在所有惯性系守恒。
It is pointed out that the relativity principle is satisfied by the law of conservation of mechanical energy.
指出机械能守恒定律是服从相对性原理的。
It is pointed out that the relativity principle is satisfied by the law of conservation of mechanical energy.
指出机械能守恒定律是服从相对性原理的。
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