alkylen.链烃基化合物alkyln.[化]烷基adj.含烷基的alkyloxypyridine烷氧基吡啶alkyl morpholine烷基吗啉alkylated cation烷基化阳离子alkylphosphonaten.磷酸烷基酯alkylating agent烷化剂alkylate bottoms烷基化油蒸馏残液alkylene diamine烷撑二胺alkyl substituent烷基取代基alkylhalide group卤烷基alkylating agents烷化剂(抗肿瘤药)