If the copper prices we pay are not at the international level, our sales will drop, and then the demand for US copper will go down.

如果我们购买的价格不能维持在国际水平，我们的销售量就会下降，从而引起美国的铜矿需求下降。

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There has also been a surprise drop in the fees charged by smelters and refiners to process dry feedstock, or copper concentrate as it is known, into anodes and eventually cathodes.

冶炼商和精炼商将干原料(即铜精矿)加工为阳极铜、以及最终加工为阴极铜收取的费用也令人意外地出现了下降。

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The sessile drop technique is used to measure the contact Angle between molten aluminum and graphite or copper coated graphite.

采用改进的座滴法分别测定了铝熔体与石墨、镀铜石墨的接触角。

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Barrick Gold also produced 82 million pounds of copper, a drop from the 98 million pounds produced in the fourth quarter of 2009.

FORBES: Surging Gold Prices Take Barrick Gold's Profits To Record Highs

Copper saw a price drop and also saw speculators slice net-long positions accordingly.

FORBES: FOCUS: Speculators Start Buying Precious Metals Futures, Options Again -CFTC

All the precious metals saw an increase in net-long positions, while there was a slight drop in copper net-long positions by speculators.

FORBES: CORRECTION - Speculators Continue To Build Bullish Gold Positions - CFTC