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从地球动力学角度，研究制约和影响我国大陆地震活动的兴衰起伏的内在原因，揭示我国大陆地震活动期（300年）、幕（20年左右）、段（几年）实际是由于太阳黑子活动、地球自转速率变化、全球强震活动水平在不同阶段迭加和组合的结果。
From the perspective of geodynamics, this paper studies the internal causes that constrain and influence the ups and downs of the seismogenic activities in mainland China, revealing that the seismogenic period (300 years), the curtain (about 20 years), and the period (years) in mainland China are actually caused by sunspot activities , Changes in the Earth’s rotation rate, and the results of superimposing and combining the levels of global seismic activity at different stages.