以二羧酸和异丁醇为原料,用硫酸作催化剂,合成二羧酸二异丁酯.The diisobutyl dicarboxylate was prepared by using acid and isobutanol as material and acid as catalyst.以冰醋酸、异丁醇为原料,硫酸高铈为催化剂合成乙酸异丁酯.A method for synthesis of isobutyl acetate based on ceric ...
Scratch - cards and membership cards making easy - to - curettement, the local card printing and membership card making, special circumstances.刮刮乐制卡和会员卡制作易刮不兴, 局部制卡和会员卡制作, 不入格环境下需给.Tonsillectomy and curettement of adenoi...
严肃、严谨、倔强的他同时又冷漠、多疑、敏感、不会变通。Formal, exact and obstinate, he was also cold, suspicious, touchy and tactless.我叔叔是位严格而又倔强的军医,他曾身经两次大战.My uncle was a hard - nosed army officer who had seen service in two wars.驴被认为是最倔强的牲畜。Donk...
The growth rate of seed shoots is higher than corm shoots.生长过程中,种子繁殖苗的生长速率大于球茎繁殖苗.Hawaiian food made from taro corm that is cooked, pounded a paste, and fermented.夏威夷菜,芋头捣碎成糊状, 通常允许发酵.A loose , membranous outer covering ...
目的探讨多巴胺速尿联合腹腔注射治疗重度妊高征腹水疗效.Objective To probe into the effect of using Dopamine and Lasix to cure the severe PIH.表明抑制碳酸酐酶是速尿对内淋巴脱水的作用机理之一.It'suggested that one of the dehydrant mechanisms is inhibition of carbonic a...
这些分子链彼此缠绕，形成缆线状的结构。These strands of molecules twine around each other to form cable-like structures.此外我们也在研究线状的染色体与线状质体在接合生殖过程中如何地传送.We are also studying how the linear chromosomes and plasmids are transferred during con...