precardium
英
美
网络 心前区
双语例句
- In order to find out the clinical significance of the third heart sound ( S3), the heart sound data was sampled at the precardium and lead I of ECG was recorded simultaneously to label heart.
研究第三心音（S3）在临床上的意义。在心前区采集心音数据，并采集一导心电信号来定位心音。 - The wavelet transform time-frequency analysis method was used to detected the S3 and S4. The heart sounds data was sampled at the precardium, and Lead I of the ECG was recorded simultaneously to label the heart sounds.
用小波变换时频分析的方法对老年人的第三第四心音进行了分析研究，在心前区采集心音数据，为对心音定位，同步采集了一导心电信号。