chitosan quaternary ammonium salt 壳聚糖季铵盐
quaternary ammonium salt of lignin 木质素季铵盐
isoquinoline quaternary ammonium salt 异喹啉季铵盐
imidazoline quaternary ammonium salt 咪唑啉季铵盐
Tribromide quaternary ammonium salt 三溴季铵盐
quaternary ammonium salt A 1 季铵盐A
Quaternary ammonium salt of chitosan 壳聚糖季铵盐
The preparation methods of quaternary ammonium salt of chitosan at home and abroad, meanwhile were introduced, and heir advantages and shortcomings were compared.
对目前国内外壳聚糖季铵盐的制备方法加以介绍，并比较了它们的优缺点。
The rate of reaction is first order with icspect to epoxy group, zero order with respect to methylacrylic acid, and 0.71 order with lespect to quaternary ammonium salt catalyst respectively.
实验证明该反应对环氧基为一级反应，对甲基丙烯酸为零级，对季铵盐是0.71级。
The difference of ammonia, amido, amino group and quaternary ammonium salt, some common wrong expressions on them, and the valence state of phosphorus in some of its oxyacid were pointed out.
指出了氨、 氨基、胺基及季铵盐的区别及其常见错误表述，以及磷的几种含氧酸中磷的价态，并着重指出没有“ 次亚磷酸”的叫法。
应用推荐