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STEM奇妙科学课 Season 1 Episode 40 不可思议的平衡 2019

我们来挑战一下,看你能不能让一把勺子、一把叉子、一根牙签“站”在玻璃杯上。这个实验的秘密在于“重心”,当物体的重心在重力的方向上时,如果没有外力打扰,物体将达到平衡。

  • 发布日期: 2020-06-09
  •   运行时间 : 60 分钟
  •   类型 : 动画, 儿童
  •   明星 :
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