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清风拂梦

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[求助] 求大神帮忙翻译一下,材料化学类的……谢谢

The DMF–water mixtures with different water fractions were prepared by slowly adding distilled water into the DMF solution of samples under ultrasound at room temperature. For example, a 70% water fraction mixture was prepared in a volumetric flask by adding 7 mL distilled water into 3 mL DMF solution of the sample. The concentrations of all of the samples were adjusted to 5mM after adding distilled water

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