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我们于1976、1977年对参加选拔飞行学员的408名15～18岁健康男性青年作了心电图常规九导联卧位检查,少数加作V_3R及坐位描记。现报告如下。QRS波平均心电轴目前心电轴的正常范围提法
In 1976 and 1977, we conducted a routine nine-lead electrocardiogram examination of 408 healthy young men and women aged 15 to 18 who participated in the selection of trainees. A minority of them were enrolled in V_3R and sitting tracings. The report is as follows. QRS wave average ECG axis current normal range of ECG reference