law of conservation of angular momentum meaning in English

角动量守恒定律

The law of conservation of angular momentum may be demonstrated with a gyroscope .
角动量守恒定律，可以用回转器来演示。
It must then make fewer turns per second , in obedience to a law of physics called the conservation of magnetic moment ( this is similar to the law of conservation of angular momentum that slows a spinning ice dancer down as he spreads his arms )
服从称为磁矩守恒的物理定律，其会减少每秒旋转的次数（这一定律与角动量守恒定律很相似，花样滑冰舞者通过伸展自己的上肢来减慢自己旋转的速度就是利用这一原理）。