求翻译：例2： 主机放置在出液面与体腔同一水平面时（高差为0），欲使体腔实际压力为10KPa，则设定压力为10KPa，当灌注泵运行至腔内显示压力为10KPa时，腔内实际压力为10KPa。是什么意思？

Example 2: host liquid placed in a body cavity with the same horizontal plane (elevation 0), purports to actual body cavity pressure 10KPa, then the set pressure 10KPa, when the infusion pump to the chamber pressure 10KPa show, the chamber actual pressure within 10KPa.

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