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The hydroxyl value of epoxy-containing polyester was determined by analyzing acetification principle and using acetyl chloride as acetifier and methylene chloride as solvent.

通过对其酰化原理分析,选用乙酰作酰化烷作酰化溶,测定含环氧的羟值。

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In this paper,we studied the law of alcoholization and acetification of apple vinegar which was produced with fast liauid-state fermentation,using Fusi apple as raw material.

以富士苹果为原料,采用快速液态法生产果醋,探讨其酒化和醋酸化规律。

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3G, 401(K), a,

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