用一个水管把一个桶里的水传输到另一个桶,在另一个桶的水管那里吸一下水就自动过去了,这是什么原理? 知乎 Template




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tomski用一个水管把一个桶里的水传输到另一个桶,在另一个桶的水管那里吸一下水就自动过去了,这是什么原理? 知乎 coloring