Objective : To establish a method for determination of Irone in Iris tectorum.目的: 建立鸢尾原料中鸢尾酮含量的分析方法.Irone was obtained through three steps reactions with citral and acetone base catalyst to give pseudoionone.采用山苍子油提取得到的柠...
His behaviour was indubitably ill-judged.他的行为明显是欠思量。He was, indubitably, the most suitable candidate.他无疑是最合适的人选。Indubitably, something of moment happened.不消说的, 一定发生了什么重大的事情....
硅酮隆胸植入物a silicone breast implant一种叫作吡啶酮的新型抗艾滋病药物能促使艾滋病毒变异，使其不能繁殖，也不会再感染新的细胞。A newer anti-HIV drug called pyridinone caused HIV to mutate into a form which could not reproduce or infect new cells.所有的主要难点都涌现在烯酮 ( 1 ) 的合成中....
We have had some reassurances from the council that the building will be saved.理事会保证会保留那座建筑,这使我们得到了些许安慰.Everybody's reassurances have encouraged me.大家的勉励鼓舞了我.Months passed and it felt like our relatives could reassu...