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- chitosan quaternary salt 壳聚糖季铵盐
- Chitosan quaternary ammonium salt 壳聚糖季铵盐
- O-substituted chitosan quaternary ammonium salt O-季铵盐壳聚糖
- Morphine binds strongly to opiate receptors in the brain to produce analgesia.In vitro studies on opiate receptors show that the quaternary salt of morphine also binds strongly. 吗啡通过与大脑中的阿片受体紧密粘合产生止痛作用,在体外研究中，阿片受体与吗啡的季盐也有强力的粘合作用。
- Sodium carbonate deposits may be classified into three major types, Quaternary salt lake, Quaternarysand-covered playa and Tertiary continental detrital rock, all three having been found in China. 碳酸钠矿床有三大类型：第四纪盐湖型、第四纪砂下湖型及第三纪陆相碎屑岩型，在中国均有发现。矿床均赋存于第三纪以来（多为第四纪）陆相湖盆。
- Its interlayer distance increases from 1.54 nm to 2.26 nm. (2) Use quaternary salt with epoxy groups as intercalation guest to intercalate mont morillonite and characterize it with FTIR and XRD. 本文主要内容如下： （1）选用带有羟基基团的季铵盐插层剂改性蒙脱土，用XRD对其层间距的变化进行表征，其层间距由1.;54 nm增大到2
- Preparation of carboxymethyl chitosan quaternary ammonium salt and study on its antibacterial activity 羧甲基壳聚糖季铵盐的制备及其抑菌性能研究
- Keywords chitosan quaternary ammonium salt;chitosan derivative;hygroscopic property;moisture retentiveness; 壳聚糖季铵盐;壳聚糖衍生物;吸湿性;保湿性;
- Effects of chitosan quaternary ammonium on structure and properties of silk fiber 壳聚糖季铵盐处理对真丝纤维结构与性能的影响
- Salt is a common food preservative. 盐是一种常用的食物防腐剂。
- The preparation methods of quaternary ammonium salt of chitosan at home and abroad, meanwhile were introduced, and heir advantages and shortcomings were compared. 摘要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。
- He spoiled the soup by putting too much salt in it. 他放了太多的盐，把那盘汤糟蹋了。
- My hair kinked up in the salt water. 我的头发在盐水中缠在一起了。
- Add salt, pepper and a dash of vinegar. 加盐、胡椒粉和一点儿醋。
- She is economical in her use of salt when cooking. 她烹饪时用盐很少。
- She lifted the lid of the pot to add some salt. 她掀起锅盖加点盐。
- Quaternary ammonium salt of chitosan was synthesized starting from chitosan, triethylamine and ethyl chloroacetate by ester exchange reaction. 以三乙胺、氯乙酸乙酯和壳聚糖等为原料,采用酯交换法合成了壳聚糖季铵盐。
- chitosan quaternary ammonium 壳聚糖季铵盐
- Add salt to correct the seasoning. 加点盐把味道调好。
- Salt has a preservative effect on food. 盐对食物有防腐作用。
