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可以利用砂土液化的下吸现象 ,通过对下部地层中存在的上部地层物质的鉴定 ,判定其发生时期。并且可以认为 ,对砂土液化遗的下吸现象的正确观察是解明古地震砂土液化的机理
The phenomenon of under-suction of sand liquefaction may be utilized to determine the period of occurrence by identifying the upper strata present in the lower strata. And it can be considered that the correct observation of the descending phenomenon of liquefied widow is to explain the mechanism of sand liquefaction