为了说明心脏如何使血液在全身循环流动，老师描述了水泵的工作原理。
To illustrate how the heart circulates blood through the body, the teacher described how a pump works.
介绍一种电子数控的移动式液压传动的体外心脏按压机的工作原理、结构设计和人体模型上的试用效果。
This article introduces the working principle, the structural design of a mobile digital hydraulic extracorporeal heart compression machine and its trial result on the human model.
如今， 哈拉格普尔理工学院教授古哈领导的团队根据蟑螂心脏的工作原理研发出了一种人工心脏，他们声称此心脏能长时间高效正常工作，且价格能为大众所承受。
Now a team led by Sujoy Guha of the Indian Institute of Technology, Kharagpur, has created an artificial human heart based on a cockroach's, which they believe will be unusually robust and affordable.
气动式人工心脏特征是：工作原理与心脏收缩一样，外形可制成心脏形态便于植入人体。
The artificial pneumatic heart operates on the same principle as heart and may be implanted into human body.
气动式人工心脏特征是：工作原理与心脏收缩一样，外形可制成心脏形态便于植入人体。
The artificial pneumatic heart operates on the same principle as heart and may be implanted into human body.
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