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体表心电图的QRS和T波分别是心室肌除极与复极波,由于心室大约由几亿个心室肌细胞构成,因此,体表心电图的QRS-T波是几亿个心室肌细胞除极与复极产生的电流汇合在一起形成的。
QRS and T wave of the body surface ECG are ventricular depolarization and repolarization wave respectively. Since the ventricle is composed of hundreds of millions of ventricular myocytes, the QRS-T wave of the body surface electrocardiogram is the depolarization of hundreds of millions of ventricular myocytes And repolarization of the current together to form the current.