搜索 - 科创

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我还发现如果电源是直流时，电弧正极不亮（温度低）负极亮，注意我说的是在灯泡里放电，电弧两端,（灯丝之间放电）烧灯丝亮度的情况

我只是在一个比较坚固的易拉罐中钻个很小的孔，用针孔把里面的饮料抽出来，然后再注入酒精，再把易拉罐加热，就有蒸汽从孔中喷出，点燃蒸汽，那火焰很漂亮温度也比较高。

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