They were principally used to catalyze aldol, allylation, Diels - Alder, ene and Friedel - Crafts reactions.它们主要被用来催化Aldol, 烯丙基化, Diels-Alder, Ene和 Friedel -Crafts等反应....
这对夫妇曾帮着搜寻那些幼童。The couple had helped in the hunt for the toddlers.克鲁兹不得不从报纸和杂志中搜寻信息。Cruz had to scavenge information from newspapers and journals.救援人员正在废墟中挖掘，以搜寻其他受害者。Rescue workers are digging through the rubble in searc...
...his six-day bus tour around the industrial heartland of America...他在美国工业中心区域的大巴6日游We then headed west towards the heartland of Poland.我们随后朝西前往波兰中部。The USA’s Middle West is the heartland of the country.中西部是美国的中心区域。Cun ...
To understand the etiology, pathogenesis and classification criteria of uremia.了解尿毒症的病因 、 发病机理及肾功能不全的分期标准.To provide theoretic basis for the clinical diagnosis and treatment of uremia.为临床诊断和治疗尿毒症及其血液透析的并发症提供理论依据.What is ...