Hollow microspheres are a type of microspheres with hollow space inside.

中空微球是一种内部为空腔结构的球形微粒。

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A method for preparing polymer microspheres with high magnetic content is introduced.

提出一种制备高磁含量聚合物的方法。

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Objective:To optimize the prepartion of genistein chitosan microspheres with central composite design (CCD).

目的：采用星点设计实验，优化金雀异黄素壳聚糖微球的制备工艺，提高预测性。

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The new vaccine microspheres, on the other hand, can be injected straight into the body, eliminating those sorts of mistake and with them the need for the preservatives found in ordinary vaccines.

ECONOMIST: Vaccines