同类产品只可以存放两支胰岛素笔，且不能存放较粗的注射笔。
The similar products can only store 2 insulin pens and can't obtain the Humulin pens at all.
比较两组病人胰岛素笔注射及相关知识掌握率。
The two groups were compared in view of the mastery of knowledge of injection by insulin pen.
比较两组病人胰岛素笔注射及相关知识掌握率。
The two groups were compared in view of the mastery of knowledge of injection by insulin pen.
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