目的比较两种不同的静脉穿刺法引起患者疼痛的程度。

Objective In order to compare the pain of two intravenous puncture methods.

youdao

目的比较两种不同的静脉穿刺法引起患者疼痛的程度。

Objective In order to compare the pain of two intravenous puncture methods.

youdao