1)ammonium compound,铵基化合物2)ammonium base compounds,铵基化合物3)ammonium,铵基4)ammonio,铵基5)ammonium base,铵基6)quaternary ammonium,季铵基7)quarternary ammonium group,季（四）铵基8)ammonium,铵，铵(基)9)ammonium ylide,铵基叶立德10)quartenary ammonium salt of polysaccharide,季铵基聚糖
用法例句
Four new types of organic siloxane surfactants with quaternary ammonium group havebeen obtained.