R ” 是取化基,如乙氧基 、 甲氧基及它们的环氧和烷氧同系物或卤基.R " is a replaceable function , e . g . acetoxy, methoxy, their acyloxy and alkoxy homologs or halo.蒸馏得质量分数高于98%的邻乙氧基苯甲酸,收率为92%.Distillation gave o ethoxybenzoic acid with 98 % of the p...
Plus mannitol to reduce its accumulated in the tubular cells.加用甘露醇可减少其在肾小管中积聚.The physical and chemical property, applications and synthesis processes of mannitol were reviewed.介绍了甘露醇的性质和用途,几种制备甘露醇的原理、工艺条件及研究进展.Mannitol ...
The clinic doctor will then write to your GP to get his agreement.然后门诊医生将会写信给你的全科医生以取得他的同意。I'm dealing with customers all the time who have let their debts get out of control.我成天和那些负债累累、无力偿还的顾客们打交道。Why did people ge...
He became known as the enfant terrible of British theater.他成为英国戏剧界让人头痛的天才。Theater owners lease films from film distributors.剧院老板从电影发行商处租电影放映。a restaurant catty-corner from the theater斜对着剧院的餐馆...
ISF stands for International Softball Federation.ISF是国际垒球联合会的缩写(简称).The reason that the sifting bars of ISF bind sinter mix is analysed.详细分析了ISF布料器在运行过程中筛杆粘料的原因.And a new weighted measure on the characteristic of the ISF...