Anti-collision equipments system is developed to solve the collision problems of dam construction equipments, and in the......

用反相离子对色谱法和薄层－紫外分光光度法测定联邦止咳露中主成分的含量。反相离子对色谱法条件为Ｓｐｈｅｒｉｓｏｒｂ Ｃ１８柱，１０μｍ，４．６ｍｍ×２５０ｍｍ；流动相：甲醇－水－冰醋酸......

采用多波长直线回归分光光度法,不经提取分离,直接测定联邦止咳露中磷酸可待因、盐酸麻黄碱和扑尔敏3种组分的含量.磷酸可待因、盐......