Despite the great headway of China's modern seismological study, it is still at its toddling stage, and our policy of seismic mitigation is far from fully-fledged.
中国的现代地震科学研究取得很大进展，但仍然处于幼年阶段，减灾对策还很不成熟。
The G-R relation between the earthquake magnitude and frequency has been an important premise in seismological study, but its actual distribution often deviates from its theoretic result.
地震震级频度的古登堡·里克特关系式(简称g - R关系式)一直是许多地震学问题研究的重要前提之一，然而实际分布常常与这一关系式有一定的偏离。
The chief purpose of this study is aimed to find some seismological criterion for earthquake precursors.
这些研究的一个共同宗旨是，试图寻求某种地震学方面的前兆特征，以便能够准确地预报地震。
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