In this article the research on oral sustained and controlled release preparations is surveyed.

本文综述了口服缓控释制剂研究概况。

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Hydroxypropylmethylcellulose(HPMC), as hydrophilic gel matrix, is widely applied in the study of controlled release and sustained release preparations.

羟丙基甲基纤维素（ HPMC）作为构成亲水凝胶骨架片的主要控释、缓释材料广泛用于药物的控释和缓释制剂的研究。

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Conclusion: The equal distance release method is a simple, practical method, and is a better release method of sustained-release preparations in vitro.

结论：等距浸出法简单实用，是一种较好的长效制剂的体外释放新方法。

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Usually the day before a race I'm involved in activation work with both the boys and the girls so that's any soft tissue work, joint manipulation or release and any last minute preparations for the race.

BBC: Physio gets Brownlee back on track

We will release every vulture that's in that trap today and re-bait it in preparations for Tuesday's attempt.

NPR: NASA Sets New Discovery Launch Date for July 4

Preparations were disrupted by the row between the Welsh Rugby Union and the four Welsh regions over player release.

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