Based on the reactions , this paper reports research for synthesizing benzaldehyde.简要介绍以此类方法对合成苯甲醛的研究.Natural benzaldehyde is prepared by hydrolysis cassia leaf oil.从桂叶油出发,通过碱性水解制备天然苯甲醛.Pitch resin was synthesized from b...
There was a smear of gravy on his chin.他的下巴上粘着肉汁。I always spatter my blouse with gravy when I eat.吃饭的时候，我总是把肉汁溅到衬衣上。Prepare the gravy mixture.将肉汁混合料调好。...