cardiac efficiency

例句：

1. 1.The new heart valve design has significantly improved cardiac efficiency.
   新的心脏瓣膜设计显著提高了心脏效率。
2. 2. In the study, researchers found that a higher cardiac efficiency can lead to better health outcomes.
   在研究中，研究人员发现更高的心脏效率可以导致更好的健康结果。
3. 3. Cardiac efficiency is closely related to the functioning of the heart and blood vessels.
   心脏效率与心脏和血管的功能密切相关。