... 2.3心脏听诊(cardiac auscultation 2.3.1正常心音(normal cardiac sound) 2.3.2心音最强（佳）听取点(the area of best cardiac sound) 。 ...
双语例句
1
The amplitude of first heart sound is a normal measurement of cardiac contractility, and phonocardiogram (PCG) can be used in the study of cardiac contractility reserve.