For some of these events the tops of the magnetic loops showed a curious cusp giving them the pointed appearance of a gothic arch rather than presenting the usual rounded peak.
在一些日焰现象中，磁场环圈顶部显现出神奇的尖端，看起来就像是有尖顶的哥德式拱门，而非一般常见的圆顶。
Through the analysis of copper time series' characteristics, we found that copper yield rate time series had peak fat-tail characteristic, volatility clustering characteristic and obvious ARCH effect.
通过对沪铜收益率时间序列特征的分析发现，沪铜收益率时间序列存在尖峰厚尾性和波动集群性，并具有明显的ARCH效应。
Through the analysis of copper time series' characteristics, we found that copper yield rate time series had peak fat-tail characteristic, volatility clustering characteristic and obvious ARCH effect.
通过对沪铜收益率时间序列特征的分析发现，沪铜收益率时间序列存在尖峰厚尾性和波动集群性，并具有明显的ARCH效应。
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