The reaction is intramolecular and hence fast and clean.此反应属分子内反应,因而快速且干净利索.The prepared random SBR has uniform inter ? and intramolecular composition distribution.该体系合成的丁苯共聚物具有均匀的分子内和分子间分布.Application of samarium diiodi...
史蒂文斯给他写了张便条，请他去自己的公寓。Stevens wrote him a note asking him to come to his apartment.史蒂文斯遭谋杀源于深仇宿怨。Stevens's murder was the result of a deep-seated and intense hatred.约翰·史蒂文森是谢菲尔德大学的历史学高级讲师。John Stevenson is Reader in ...
It was highly unlikely that their paths would cross again.他们再次偶遇的可能性非常小。Brick rubble is useful as the base for paths and patios.碎砖石可以用来铺路基和庭院地基。The paths are often very rocky so strong boots are advisable.路上通常石头很多，所以最好穿结...