Electromagnetic perturbations before Wenchuan M8 earthquake and stereo electromagnetic observation system
汶川8级地震前电磁扰动与电磁立体监测体系
The frequencies and damping time of the quasinormal oscillations called" quasinormal mode"( QNM) are determined only by the black hole's parameters and independent of the initial perturbations.
似正常振荡阶段的振荡频率和衰减时间被称为似正规模,与初始扰动无关,主要由黑洞的参数决定。
Due to the effects of perturbations, the distribution of air pollution often presents irregular undulations.
受近地层局地小扰动的影响,大气污染浓度分布常呈现不规则起伏。
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