本文详细的论述了依据正交相位检测法提取多普勒频移信号的方法，并对各部分实现电路作一简要的介绍。
This paper has discussed the way of probing Doppler shift signal based on crossed phase detecting method in detail and introduced each function circuits briefly.
目的进一步挖掘出两导联心电信号中潜在的信息，探讨一种分析与处理两导联心电信号的新方法，即心电正交合成图法。
Objective To dig out the potential information in two-lead ECG signals, and discuss a new method of analyzing and processing two-lead ECG signals, viz.
目的进一步挖掘出两导联心电信号中潜在的信息，探讨一种分析与处理两导联心电信号的新方法，即心电正交合成图法。
Objective To dig out the potential information in two-lead ECG signals, and discuss a new method of analyzing and processing two-lead ECG signals, viz.
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