目的：考察影响盐酸维拉·帕米脉冲片控时效果的因素。

OBJECTIVE: to investigate the factors that influence dissolution characters of pulsed release tablet (PRT) of verapamil.

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以盐酸维拉帕米为模型药物，制备了口服渗透泵片。通过考察渗透泵片体外释药各过程的速率，研究口服渗透泵制剂释药的基本过程及其特性。

The main processes of the drug delivery of oral osmotic pump system were studied to investigate its delivery characteristics, with verapamil hydrochloride as the model drug.

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