The left ventricular pressure , femoral arterial blood pressure and the ECG wave form are digitized at a sampling rate of 500 Hz by a 12 bit A/D converter.是什么意思_The left ventricular pressure , femoral arterial blood pressure and the ECG wave form are digitized at a sampling rate of 500 Hz by a 12 bit A/D converter.在线翻译_英语_读音_用法_例句