first heart sound

first heart sound什么意思,first heart sound翻译

基本解释

un.: 第一心音

英汉解释

• 第一心音

例句

• The results showed that the first heart sound energy fraction were significantly different in the normal group and the heart murmur group.

  试验结果表明，在正常组和返流性心脏杂音组间，第一心音能量分数存在显著性差异。

• The first heart sound is caused by the closure of the atrioventricular valves and so marks the beginning of ventricular systole.

  第一心音的原因是关闭房室瓣膜等标志着心室收缩。

• Frequency Detection of the First Heart Sound Based on Wavelet Transformation

  基于小波变换的第一心音频率检测