原油重回90以上及沪铜再次翻红给多头以较大的心理支撑。
Crude oil back on more than 90 and Shanghai copper Red Bulls again to a larger psychological support.
同时，对沪铜收益率的波动性特征，两类模型得出了相同的实证结果。
At the same time, to the volatility of copper yield rates characteristics, two types of models came to the same empirical results.
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.
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