英语翻译牛奶中含有蛋白质,烘烤后变性凝固显色,就会出现字了.糖水和盐水烘干后出现的是糖和NACL的晶体 而水一烘干就都蒸

给我半个小时吧.
Milk contains various types of protein.When proteins are heated up,their chemical structure and color would change,causing the appearance of the pre-written letters.
After drying off the sugary or salty water,sugar crystal and sodium chloride crystal remains.
However,nothing would appear for dying out pure water,since all water molecules vaporized.
If you wrote the letters with low-concentration sulfate acid,after heating the paper up,the letters would also appear.However,this is due to the fact that higher concentration sulfate acid could carbonize the paper.
Pure water is formed by only water molecules.Therefore,after all water molecules vaporized,there will be nothing remains on the paper.
Salty water and sugary water are solutions of solid salt/sugar.After all water molecules vaporized,salt (sodium chloride molecule) and sugar molecules remain on the paper.
Because of the fact that we wrote the letters with those solutions,after we vaporize all the water molecules,the arrangement of the sodium chloride/sugar molecules would be the same as the pre-written letters.
Milk,too,is a mixture.According to the reasoning we mentioned above,after all water molecule vaporized,only the solvent in the milk (proteins) will remain on the paper.
好像第一段和第二段的意思差不多啊.
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Milk contains protein, after baking, degeneration of solidification will appear character.
Sugar and salt water after drying the sugar and NACL crystals
And all the water evaporated, drying, s...

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