Objective To observe the relationship between coronary artery disease(CAD) and heart rate variability(HRV) and QT dispersion(QTd).是什么意思_Objective To observe the relationship between coronary artery disease(CAD) and heart rate variability(HRV) and QT dispersion(QTd).在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句