Retinoic acid (RA) nanoparticle suspensions with different concentrations were prepared by solvent-diffusion method in aqueous and freeze-drying.
采用溶剂分散法制备了不同药物质量浓度的维甲酸纳米颗粒混悬剂，并对其进行了冷冻干燥；
The dynamic surface tensions(DST) of aqueous cetylpyridinium bromide(CPB)solutions at various concentrations was measured, by using the drop volume method.
滴体积法测定了十六烷基溴化吡啶（CPB）水溶液的动态表面张力。
This product is used for high concentration of alkaline bath, high concentrations of inorganic salt aqueous solution of the penetrating agent, even at low temperatures also have excellent penetration.
本品用作高浓度碱性浴、高浓度无机盐水溶液的渗透剂，即使在低温下也有极好的渗透力。
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