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大米为什么会吸在袋子上
更新时间: 2020-10-02 00:00:00  

倒出大米时,由于大米颗粒与颗粒间、颗粒与包装袋间快速摩擦而产生静电,产生静电吸引现象,所以包装袋会吸附一些米粒。人的手上也会带有静电,当手即将接近大米包装袋时又会产生感应电,电荷间的相互作用就造成大米吸附于包装袋的情形。

关键词: 大米 为什么 袋子

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