Polyoxyethylene glycols containing tertiary amine groups were synthesized with different amine initiators.以胺类化合物为起始剂,制备了几种含叔胺基的聚氧化乙烯二醇.tertiary syphilis第三期梅毒Antioxidant tertiary butyl hydroquinone was prepared by hydroqu...
Tertiary education follows secondary education.高等教育紧跟中等教育.Large stack deposits are controlled by deeply dipping faults Tertiary age.巨大的堆型矿体受第三纪倾陡断层控制.Aim To analyze Tertiary period sedimentary environment of Qaidamu sali...
Aircraft production continued to plod along at an agonizingly slow pace.飞机制造业仍旧举步维艰，发展速度之缓很让人头疼。He was destined to plod the path of toil.他注定要在艰辛的道路上跋涉.They had to plod wearily on up the hill.他们不得不迈着疲倦的步子登上山....
Cholelithiasis may be associated with present or past episodes of either acute or chronic cholecystitis.胆石症可能与现在和过去的急性或慢性的胆囊炎发作有关.Aim To explore the clinical characters of senile cholelithiasis and cholecystitis.目的探讨老年型胆...