Methods: The intra-gastric floating blank-pellets were prepared by extrusion-spheronization.
方法：采用挤出滚圆法制备胃漂浮空白丸芯。
The principles and method to produce spherical pellets by extrusion spheronization equipment were introduced.
概述了用挤出滚圆法制造球粒的特点和制造球形微丸的原理及方法。
Erythromycin pellets were prepared by extrusion-spheronization technology, and the parameters were optimized by orthogonal design.
采用挤出-滚圆技术制备红霉素微丸丸芯，并用正交设计筛选其制备工艺；
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