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5 个月
揭秘我国古代取水神器:结构简单却蕴含三大物理学原理
第三个也是最关键的一个原理,是区分渴乌与普通虹吸管和连接器的关键所在,即如何产生初始升力,使液体能够在高斜坡上长距离运输。当从油箱 ...
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