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。
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。
It will have effect on the growth and yield of crops when the copper content in soil is over a critical concentration.
当土壤中铜含量超过一定浓度时，将对作物生长发育及产量产生影响。
The inner spiral copper tube produced by extrusion-rolling process has a kind of special line defect, which influences the production yield remarkably.
采用挤轧法生产内螺纹铜管时易出现一种特有的线形缺陷，显著影响内螺纹铜管的成材率。
By treating this precipitate with nitrous acid followed by a recrystallization process, copper (II) nitrate was recovered in 82.32% yield.
该沉淀经硝酸溶解和浓缩结晶可以得到硝酸铜，其回收率为82.32%(以铜含量为基准)。
Effects of peak electric voltage and feed flow rates of methane and hydrogen on CH4 conversion, C2 yield, and the selectivity were investigated using copper or stainless steel electrode.
实验采用铜电极和不锈钢电极分别考察了输入电场峰值电压和甲烷、氢气进料流量等参数对甲烷转化率和碳二烃收率、选择性的影响。
International copper prices fluctuate greatly. In this context, the study of China's copper futures yield rate volatility has important practical significance.
在此背景下，研究我国铜期货收益率的波动性具有重要的现实意义。
The invention has the advantages of simpleness and practicability, effectively maintaining the copper pipe with defects and obviously improving the yield of air conditioner heat exchanger.
本发明简单实用，可以使得有缺陷的铜管得到有效的维修，明显提高空调热交换器的成品率。
In the acidic aqueous solution of copper sulfate, pyridine-2,3-dicarboxylic acid was synthesized by oxidizing quinoline with sodium chlorate, and the yield of the product could reach 56.4%.
在含硫酸铜的酸性水溶液中，用氯酸钠作氧化剂，氧化喹啉得到2，3-吡啶二甲酸，产率为56·4%；
In the acidic aqueous solution of copper sulfate, pyridine-2,3-dicarboxylic acid was synthesized by oxidizing quinoline with sodium chlorate, and the yield of the product could reach 56.4%.
在含硫酸铜的酸性水溶液中，用氯酸钠作氧化剂，氧化喹啉得到2，3-吡啶二甲酸，产率为56·4%；
应用推荐