利用心电图机观测心电信号波形，是医护人员了解病人心脏情况的重要途径。
Observed using ECG waveform, is health care personnel to patients in an important way to the heart of the situation.
利用心电图机观测心电信号波形，是医护人员了解病人心脏情况的重要途径。
Observed using ECG waveform, is health care personnel to patients in an important way to the heart of the situation.
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