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。

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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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It would be tough to trigger an inversion of the government yield curve, with short rates at this level.

短期利率处于目前水平，同期比将很难引起国债收益率曲线反转。

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However, in-cell touch is expected to take off in 2012 as yield rates improve.

ENGADGET: Report: Touchscreen demand to grow by 90-percent, led by mobile, tablet markets

So while the core technology promises long-term benefits, yield rates could be a problem in the shorter terms, Alexander says.

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In the months before the new iPad was announced, yield rates for Apple's Retina display were a huge question mark.

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