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物理老師用氣球環(huán)展示伯努利原理，氣球懸浮空中不下落!

2026-03-20 17:13:39 來(lái)源：科普中國(guó)

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物理老師用氣球環(huán)展示伯努利原理，氣球懸浮空中不下落!

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