报道以呋喃甲醛和苯乙酮为原料,氢氧化钠为催化剂,采用超声波辐射合成糠叉乙酰苯的方法. With furfural and acetophenone as raw materials - furfurylideneacetophenone was synthesized by NaOH as catalyst under ultrasonic irradiation.
The Netherlands has been reclaiming farmland from water.荷兰人一直在围海造地。People here are reclaiming land from the sea.这儿的人们正在填海拓地.Draining and reinforcing material for reclaiming seabeach and swamp.海滩和沼泽地开垦的排水材料和加固材料....