Re: [其他] 鳳梨果醬
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╱ ╲ 黃色的部分是果醬
| | 白色是水蒸氣
| | 當果醬趁熱裝進的時候,因為熱度的關係
| | 一些水分會蒸發成水蒸氣
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╰───────╯
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╱ ╲ 蓋上蓋子以後,就變成這樣
| | (顏色所代表的還是一樣哦)
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╰───────╯
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│..........│
╱ ╲ 當水蒸氣都凝結成小水滴
| | 而水滴的體積又比水蒸氣小
| | 原本被水蒸氣補滿的空間就變成真空了
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| | ..... 是水滴
| | 是真空(註)的部分
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╰───────╯
註 : airrooco版友補充只是壓力減小,不會是真空
這樣有好懂一點嗎?
而凝結的水滴就跟蒸餾水一樣 所以並不會加速食物腐敗
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※ 編輯: tiamero 來自: 61.228.41.146 (06/14 18:19)
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