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.阳离子表面活性剂通常为季铵盐类.Cationics are usually quaternary ammomium salts.反 离子通常是钠, 钾和铵.The usual counter - ions are sodium, potassium an...
...food depots.食品仓库Public transportation termini and depots are important infrastructures for a city.公交场站设施是城市重要的基础设施.In the coastal cities are equipped with after - sales service and depots.在各沿海城市均设有服务部及售后维修站.Suitable t...