英语语法分析

ECG and phonocardiogram were recorded by synchronization.

整个检查过程同步记录心电图及心音图。

It consists of a phonocardiogram sensor, a heart sound collecting and processing circuit, and a computer.

该系统由心音传感器、心音信号采集处理电路及计算机组成。

Objective: Explore the value of phonocardiogram exercise test (PCGET) to evaluating cardiac contractility.

目的：探讨心音图运动试验（PCGET）评估心肌收缩力及心力储备的价值。