Objective Probe into characteristic of ventricular premature beat (VPB) on vectorcardiogram (VCG) of chronic Keshan disease (KSD).是什么意思_Objective Probe into characteristic of ventricular premature beat (VPB) on vectorcardiogram (VCG) of chronic Keshan disease (KSD).在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句