At the same time, to the volatility of copper yield rates characteristics, two types of models came to the same empirical results.
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。
The stochastic comparison results on the optimal cost for the inventory system with dependent yield rates and demands are also provided.
对于多周期具有相关产出率和相关需求的库存系统，给出了系统最优费用的随机比较结果。
The stochastic comparison results on the optimal cost for the inventory system with dependent yield rates and demands are also provided.
对于多周期具有相关产出率和相关需求的库存系统，给出了系统最优费用的随机比较结果。
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