第二定律如第一定律，也只在惯性参考系下成立。
Like the First Law, the Second Law only holds in inertial reference frames.
惯性参考系也就是不存在任何，形式加速度的参考系，有可能吗？
And an inertial frame of reference would then be a frame in which there are no accelerations of any kind Is that possible?
笔者经过必要的推导得出结论：动能定理与惯性参考系的选取无关。
The author concludes by necessary inference that kinetic energy law is irrelevant to the selection of inertia reference system.
本文分析了近代的“新以太”假说和绝对惯性参考系问题，并得出了狭义相对论仍保持有效的结论。
New Aether and Absolute Reference System is analysed and the conclusion that SpecialRelativity is still valid has been darwm.
本文分别由法拉第电磁感应定律和洛仑兹力公式简明地导出了感应电场在不同惯性参考系中的相对关系式。
By means of Faraday's law of induction and Lorentz's formula of force, the relativity of induced electric field was given concisely.
牛顿力学：牛顿第一、二、三定律，惯性和非惯性参考系，牛顿守恒定律，力和潜能，重力场，向心力，低频振荡。
Newtonian dynamics: first, second and third laws, inertial and non-inertial reference frames, conservation laws, forces and potentials, gravitational field, central forces, small oscillations.
在抽油机支架强度分析中， 在全局坐标系下确定主惯性平面方位的参考节点的位置非常困难。
In the strength analysis of the pumping jack of a pumping unit, it is very difficult to determine the reference node position under global coordinate system.
通过例题，分析了在解决力学问题中惯性参考系的选取原则和方法。
The significance of choosing the proper coordinate system in solving the mechanical problems is illustrated through analyzing incorrect solutions.
通过例题，分析了在解决力学问题中惯性参考系的选取原则和方法。
The significance of choosing the proper coordinate system in solving the mechanical problems is illustrated through analyzing incorrect solutions.
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