结果：生理盐水封管组浅静脉留置针阻管发生率为22.1%，而肝素钠封管组为7.4%，后者显著少于前者（P<0.05）。

Results :The occlusion rate of superficial vein detained needle was 22.1% in group of normal saline, but 7.4% in group of heparin sodium(P<0.05).

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第三，判定排水立管通水能力的关键是根据系统内部压力波动造成水封破坏这一边界条件。

Thirdly, the key of determining the discharge caPacity of the drainage pipes was according to the boundary condition that the pressure fluctuations within the system caused seal damage.

youdao

第三，判定排水立管通水能力的关键是根据系统内部压力波动造成水封破坏这一边界条件。

Thirdly, the key of determining the discharge caPacity of the drainage pipes was according to the boundary condition that the pressure fluctuations within the system caused seal damage.

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