In this chapter we shall investigate some of the more subtle aspects of newton's second and third laws . 在这一章中，我们将研究牛顿第二和第三定律的较为精细的方面。
It was once widely believed that living organisms might be exempt from the second law of thermodynamics . 人们曾一度广泛相信，活着的有机体不受热力学第二定律的制约。
The test object will also satisfy the criteria of the first law when referred to the new frame or reference . 检验物体在这个新的参照系中也能满足牛顿第一定律的条件。
We have mentioned that independence of choice of coordinate axes is an important aspect of the law of physics . 与坐标轴选择无关，这一性质是物理学定律的一个重要方面。
The discovery that heat is a form of energy led to the postulate of a universal law of energy conservation . 热是能的一种形式这个发现，成为能量守恒这条普遍定律的出发点。
The idea of an inverse-square law of gravitational force acting on the planets was in the air around newton's time . 认为作用于行星的是平方反比定律的引力，这种看法在牛顿时代很流行。
The assertion that the forms of the laws of physics are the same in all inertial systems is known as the principle of relativity . 在一切惯性系中物理定律的形式都一样，这样的结论称为相对性原理。
Conservation laws, being based on the most elementary and intuitive ideas, are the most profound statements of natural law . 守恒定律都是基于最基本的和直觉的概念，所以都是自然定律的最深刻的陈述。
The basic concept of this law, in combination with henny's law, serves in many engineering considerations and calculations . 这条定律的基本概念与Henny的定律结合在一起，可以用于许多工程设计和计算。
This subject was first soundly established in the 17th century on the basis of the axiom usually known as newton's law of motion . 这门学科最初是在17世纪根据通常称为牛顿运动定律的原理完整地建立起来的。
