汉英词典
EXAMPLE SENTENCES | ||
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研究了有机相中脂肪酶催化以单糖和乙酸乙烯酯或乙酸酐为底物的糖酯合成反应。 The synthesis of monosaccharide ester catalyzed by lipase in organic solvents was studied, where monosaccharides and vinyl acetate or acetic anhydride serve as substrates. | ||
同时考察了乙酸酐与苯酚物质的量比对苯酚转化率的影响,得到了合成乙酸苯酯的最佳工艺条件。 Meanwhile, the influence of the ratio between phenyl hydroxide and acetic anhydride to translating rate was also studied, and the optimum technological condition… | ||
研究了由已二酸二乙酯与水合肼反应合成己二酰二肼。再用乙酸酐酰化己二酰二肼得到金属减活剂N。 Metal deactivator N, N'-Di-acetyladipic dihydrazine was prepared by reacting diethyl adipate with hydrazine hydrate, and then was treated with acetic anhydride. |