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如何打开真空罐

更新时间: 2020-09-24 00:00:00     

方法一:把瓶子倒立,一手拿紧,一手用掌心拍瓶底,这样会使瓶里的空气震荡,瓶盖自然松动。

方法二:用不锈钢或黄铜勺子、钥匙包裹上纸巾,以增加摩擦系数,沿瓶口玻璃边缘撬动瓶盖,空气进入罐头就可打开。

方法三:把罐头放在锅或者烤箱中,用80摄氏度的水加热半分钟或用烤箱90摄氏度加热2分钟,让罐子内的液体、气体膨胀,与室内气压接近就可以打开。

关键词: 如何 打开 真空

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