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The scatter point plots show the volatility clustering,therefore we fit the volatility of returns series by the modelling methods in Chapter 3,while fitting the conditional mean equations of returns series with ARMA(1,1) models.
日收益率的散点图显示出波动集聚特征，因此论文分别用第三章介绍建模方法拟合收益率序列的波动，同时用ARMA（1，1）模型拟合收益率序列的条件均值方程。
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By considering the influences of initial packing fraction, shear rate and friction coefficient on the shear velocity profile, local packing fraction and coordinate number, we have investigate the mean flow features inside shear granular flows.
根据初始体积分数、剪切率、摩擦系数等对系统内剪切速度廓线、局部体积分数和配位数等的影响规律，分析了剪切颗粒系统的平均流动特征。
- 推荐网络例句
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This one mode pays close attention to network credence foundation of the businessman very much.
这一模式非常关注商人的网络信用基础。
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Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.
扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。
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There is no differences of cell proliferation vitality between labeled and unlabeled NSCs.
双标记神经干细胞的增殖、分化活力与未标记神经干细胞相比无改变。