The kinetic energy is the fast part of swinging; it's the speed you have as you rush back and forth.
动能是你荡秋千时的速度，即你向前或向后运动时的快慢。
The broadcasting equipment forces electrons to rush back and forth in the antenna at very high speed.
广播设备使得电子在天线里以很高的速度急剧往返。
The broadcasting equipment forces electrons to rush back and forth in the antenna at very high speed.
广播设备使得电子在天线里以很高的速度急剧往返。
应用推荐