arch of excess是什么意思

用法例句

0 in Chinese mainland from 1970 to 2004, for different sequence types and different rupture modes of the main shock, the relationship between aftershock distribution size R and the magnitude of the main shock M0 has been studied statistically.

0地震序列资料,统计研究了中国大陆余震分布尺度与序列最大地震震级M0及最大地震破裂形式之间的关系。