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Watch STEM奇妙科学课 - Season 1 Episode 8 : 音调的秘密 full episode online streaming hd no registration
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STEM奇妙科学课

1 季节
52 插曲

STEM奇妙科学课 - Season 1 Episode 8 音调的秘密


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48 分钟 2025 HD

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蜻蜓的翅膀比蜜蜂的更宽大，所以飞行时振动得慢，发出的声音会比较低沉！我们可以通过调节物体振动的快慢来让声音变得高低不同，一起来用杯子做一个琴玩吧！

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