The manifestation of ECG: Narrow QRS-complex sinus tachycardia was observed.
心电图表现：表现为伴有窄qrs复合波的窦性心动过速。
There was much contention on distributive characteristics and their production mechanism of person′s QRS complex in time and frequency domain.
在人的QRS复合波的时域频域分布特征及发生机理问题上曾有过许多争论。
Objective To improve QRS complex detection rate.
目的有效提高QRS复合波的检测率。
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