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在公园门前,在街道中心广场,到处都可以看见美丽的喷泉。你想不想自己造一个喷泉,让它不停地喷水呢?今天,我们一起做几个喷泉小实验。一、利用压缩空气原理在滴流瓶内装上半瓶染有颜
In front of the park, you can see the beautiful fountain everywhere in the central square of the street. Do you want to create a fountain yourself and keep it sprinkling water? Today we are doing a few fountain experiments. First, the use of compressed air trickle bottle equipped with a half bottle stained with color