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...
Last week we visited Lu Xun's Memorial Hall.上星期我们参观了鲁迅纪念馆.Many people are now speculating whether we will demolish the Memorial Hall.现在世界上都在猜测我们要毁掉纪念堂.The memorial hall was built one year after his death.他死后一年,纪念馆建成...
股票的价值在某一特定的时期内会有涨跌。Over a given period, the value of shares will rise and fall.客户被告知保险单到期时的价值。Customers are told what their policies will be worth on maturity.她需要重新认识到自我的价值。She needs to regain a sense of her own worth....