For a heart attack that might have occurred in the past, doctors look for changes on an electrocardiogram called a Q-wave, a marker for damaged tissue.
对于也许已经发生在过去的心脏病，医生寻找心电图Q波(损伤心肌的标记物)的改变。
The major methods of measuring Q-value by the natural earthquakes are the ones of using the data of free vibration of earth, body wave, surface wave and coda.
利用天然地震波测量Q值的主要方法有：利用地球自由振荡资料、利用体波、利用面波和利用尾波来研究Q值。
The results show that the deep substance may uprise in this area, so the distribution of P-wave velocity, Q value distribution and VP/VS distribution are closely related to seismicity in this area.
结果表明在该地区很可能存在深层物质上升，从而表现出地震活动与P波速度场、Q值分布和VP/VS分布的相关性。
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