英[e\'θɪlɪk]
美[e\'θɪlɪk]
Putting the solid chitosan into ethylic acid solution can potentiator.
将壳聚糖固体溶于醋酸溶液中,作造纸增强剂.
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The that sulfamic acid is an excellent catalyst for synthesis of acetophenone cyclic ethylic ketal.
以氨基磺酸为催化剂,通过苯乙酮和乙二醇反应合成苯乙酮环乙二缩酮.
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