以正庚醛 、 硫代硫酸钠和溴代正丁烷为原料,合成了正庚醛正丁硫醇缩醛.The heptanal butyl mercaptan was synthesized with heptanal, sodium thiosulfate and 1 bromobutane as raw materials.目的研究以庚醛和原甲酸三乙酯为原料制备庚醛二乙缩醛的工艺条件.Aim Enanthal diethyl acetal is prepared ...
The cargo is being discharged into lighters.正在往驳船里卸货.Babies'bootees and cheap cigarette lighters were displayed in unlikely juxtaposition.儿童的短靴和廉价的打火机很不相称地陈列在一起.That city literally produces all of the world's l...
I think the only common denominator of success is hard work.我认为取得成功唯一的共同要素是勤奋。Tabloid newspapers pander to the lowest common denominator.小报都竭力迎合大众口味。The school syllabus seems aimed at the lowest common denominator.学校的教学大...
Can Mr. Frith buy the television on instalments?弗里斯先生可以用分期付款的方式购买电视机 吗 ?Can Mr. Frith buy the television on instalments? How does it work?费里斯先生能用分期付款方式购买电视机 吗 ?如何操作 呢 ?He teamed up with Frith and Mullen for the Chuchi fi...