它的红外光谱与樟脑硝亚胺红外光谱相似.Its IR spectrum compared with that of comphor nitrimine.亚胺基杂环丙烷季铵盐的阳离子,一定是按协同反应的方式开环的.The aziridinium ions must all be opened by a concerted process.合适的有机亚胺反应剂具有多种组成和结构.The suitable organic imine react...
There were evidences of glacial action on the rocks.这些岩石上有冰河留下的痕迹.Her expression was glacial.她表情冷淡。Change occurs at a glacial pace.变化极其缓慢。...glacial land forms.冰川地貌...rising sea levels at the end of the last glacial peri...
Political hopes for a swift and smooth transition to democracy have been dashed...迅速而顺利地过渡到民主体制的政治希望破灭了。He was making all the right noises about multi-party democracy and human rights.他假意支持多党民主和人权问题。She says the way the ...