结论黄杨宁缓释片有较好的缓释作用，释药以扩散为主。
Conclusion HSRT have a better release effect in the test condition and its release is in a way of diffusion mainly.
结论：该制剂具有明显的缓释作用，制备工艺简单，值得推广。
CONCLUSION: the capsule has obviously sustained-release property, and the preparation technique is simple and worth to be widely used.
高效液相色谱法测定血浆中布比卡因浓度及进行药物缓释作用测定。
HPLC method was used to detect the concentration and releasing effect of bupivacaine in blood serum.
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