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.
Every year more adventurers sailed west from Spain.每年有更多的冒险家从西班牙向西航行....a country spurned until now by all except the more lunatic of journalists and adventurers.一个迄今为止除了那些更为疯狂的记者和探险家外被所有人唾弃的国家Her fortune is already more...
This paper reviewed the synthesis of benzene phosphorus dichloride ( BPD ) and its applications.介绍了二氯苯基膦 ( BPD ) 的合成方法及其应用.The production and consumption presents of ethylene dichloride, and development prospect in the w...
我过去一直在寻找将和声和节奏结合起来的方法。I had been looking for ways to combine harmonic and rhythmic struc-tures.音乐教师教他们用和声演唱这首新歌.The singing teacher taught them to harmonise the new song.光 、 热和声以波的形式传播.Light, heat, and sound travel in wa...
A supportive house for eight to ten older people, each with his or her own room, provides privacy and a sense of community...一幢扶助性住宅可供8至10位老人居住，每个人都有自己单独的房间，在这里，他们既能独处，又有社区归属感。Her living room provides the best of both wo...
Sing me a doh, honey.亲爱的,唱“哆”.He had learned to snap doh, re , me.他已经学会了指弹哆来咪.Crayons, plains and Play - Doh are also good because they allow children to create.蜡笔 、 颜料和[培乐多]黏土也是很好的玩具,因为它们能让儿童发挥创造力....