Several earthquake experts refer to the "seismic gap" as a way of describing this difference between the ability of rich cities and poor ones to withstand earthquake damage.
一些地震专家用“地震空白区”来描绘富城与穷城抵御地震破坏的差异。
There is abundant precursory information of VP/VS ratio, seismogenic gap and seismic migration after1993 for analysis.
年以后波速比、孕震空区、地震迁移等可供分析的前兆信息很丰富。
Be noted that, as the seismic data on hand has a relatively low signal to noise ratio, there is a gap between the processing results and the expected results.
需要指出的是，由于实际井间地震资料的信噪比较低，因而处理结果与预想结果之间存在一定的差距。
Be noted that, as the seismic data on hand has a relatively low signal to noise ratio, there is a gap between the processing results and the expected results.
需要指出的是，由于实际井间地震资料的信噪比较低，因而处理结果与预想结果之间存在一定的差距。
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