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一.心电向量图与心电图在一个心动周期中循序出现的瞬间综合心电向量的顶端连线所构成的环形轨迹称空间心电向量环(P-QRS-T环)。心电向量环在额面、横面和侧面上的投影形成心电
I. ECG vector diagram and electrocardiogram in a cardiac cycle in a sequential instantaneous synthesis of the top of the cardiogram vector loop composed of circular trajectory called space ECG loop (P-QRS-T ring). ECG loop in the forehead, lateral and lateral projection of the formation of ECG