The conservation law of mechanical energy in variable mass mechanical systems with ideal bilateral holonomic constraints is studied.
研究具有双面理想完整约束的变质量力学系统的机械能守恒律。
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。
This article analyses the meaning and prerequisite of conservation of mechanical energy, and poses different standpoints on describing the law of conservation of mechanical energy in some textbooks.
分析了机械能守恒的内涵及条件，对有的教材关于机械能守恒定律的表述提出了不同的见解。
The law of conversion of mechanical energy and the law of conservation of mechanical energy are revealed.
又一次揭示空间的机械能势转换和守恒定律；
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。
This paper deals with the problem of how to skilfully select spring elastic potential energy zero in applying law of conservation of mechanical energy, and makes some analyses combined with examples.
在应用机械能守恒定律时，如何巧选弹簧弹性势能零点问题进行了探讨，并结合实例进行了分析。
The paper discusses how to use the principle of conversion between work and potential energy and the law of conservation of mechanical energy in the frame of non-initial reference.
讨论了在非惯性参照系中如何应用功能原理和机械能守恒定律。
To use respectively that rigid body plane differential equations of motion, theorem of angular momentum, conservation law of mechanical energy, and the law of conservation of energy.
从时间的均匀性可推得机械能守恒定律，从空间的均匀性和空间的各向同性可分别推出动量守恒定律和角动量守恒定律。
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。
This paper deeply analyzes the physical connotation of the Law of Conservation of Mechanical Energy, and points out the attention-worthy matters in the teaching process.
本文深入分析了机械能守恒定律的物理内涵，利用具体事例讨论并纠正了对该定律的两种常见错误认识，并指出了教学中应注意的问题。
This paper deeply analyzes the physical connotation of the Law of Conservation of Mechanical Energy, and points out the attention-worthy matters in the teaching process.
本文深入分析了机械能守恒定律的物理内涵，利用具体事例讨论并纠正了对该定律的两种常见错误认识，并指出了教学中应注意的问题。
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