基本解释n.胡萝卜素醛同根派生 英汉例句A series of studies on reaction condition have obtained optimum condition permitting better yield(41.5%)of carotenal shows that the published literatures(10%). 研究了影响胡萝卜醛产率的因素;得到了最佳反应条件;产率甲文献报导的10%25提高到41.;5%25。