conservation of motion的意思|示意

As to the conservation of motion of center of mass, the method of absolute coordinate system is generally used in the teaching meterials of theoretic mechanics.

对于质心运动守恒问题，理论力学教材中一般用绝对坐标法进行计算。

Turns out, some of these equations were very familiar: the law of conservation of momentum, and Newton's second law of motion.

其结果，其中一些方程非常眼熟，比如动量守恒定律和牛顿第二定律。

He is adamant that this is not a perpetual motion machine, and does not violate the law of conservation of momentum because different reference frames apply to the drive and the waves within it.

他坚持认为这并非永动机，也没有违反能量守恒定律，因为驱动器和里面的微波使用不同的坐标系。