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A novel family of ester acetal molecular glass materials has been created by the reaction between monocarboxylic acid and divinyl ethers.

羧酸和二乙烯基醚的反应,我得到了种新颖的酯缩醛结玻璃。

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at the front of, at the head of, at the instance of, at the last moment, at the latest, at the least, at the mercy of, at the moment, at the most, at the opposite extreme,

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3G, 401(K), a,

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