Energy placed into the system by a motor gets the flywheels spinning, and the same motor can be run the opposite way to pull energy out of the system.
电机令飞轮旋转，从而将能量注入系统，还是这台电机以相反方式运转则使能量脱离系统。
Under normal conditions, atoms contain two electrons per energy level surrounding their protons, with the electrons spinning in opposite directions.
在正常条件下，原子含有每周围的质子能级两个电子，与纺纱在相反方向上的电子。
The new process opposite roller spinning was advanced in the article.
提出了一种新的成形工艺——对轮旋压。
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