heart sound

• 心音

heart sound的用法和样例：

例句

1. The heart sounds are muffled when the pericardial sac is distended with fluid.
   当心包充满液体时心音减弱。
2. The PCG analysis algorithm based on support vector machines successfully identify nine types of heart disease.
   以支持向量机为基础之心音图辨认演算法可以成功的将九种心音辨认出来。