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...
因此,这些溶解了的物质就从岩石圈转移到水圈.These dissolved materials thus pass from the lithosphere to the hydrosphere.水圈与岩石圈一起形成地球的表面.The hydrosphere and the lithosphere together form the Earth's surface.岩石圈之下是由部分熔融的橄榄岩所组成的软流圈.Below th...
The pilot was given clearance to land by air traffic control.飞行员得到空中交通管制站发出的着陆许可。Clearance of the site required the removal of a number of trees.清理这一场所需要移走不少树。Clearance after the fire, Chinese cabbage, Suanmiao Add to th...
一天，一艘更大的船泊在了近岸处。One day a larger ship anchored offshore.近岸回流的冲力能把游泳的人涌到海里.The pull of the undertow can drag swimmers out to sea.近岸停泊的那艘船将于明日起航.The ship riding close to shore will set sail tomorrow....