The materials from e-waste include iron, copper, gold, silver and aluminum.

电子垃圾中的材料包括铁、铜、金、银和铝。

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The materials from e-waste include iron, copper, gold, silver, and aluminum materials that could be reused, resold, salvaged, or recycled.

电子垃圾中的材料包括铁、铜、金、银和铝，这些材料可以被重复利用、转售、废物利用或回收。

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In this work, copper underpotential deposition on gold is studied under realistic electrochemical conditions

本文研究了在实际电化学条件下铜在金表面的低电位沉积

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Leadville had gold, silver and copper mines.

VOA: special.2010.03.08

The bronze medals are largely copper because burnished bronze and gold are similar in color, and the mint did not want any confusion as to which medal an athlete receives.

VOA: standard.2010.02.16

The rise outpaces 0.3% gains in gold and copper, and platinum was higher earlier in the day even when gold and copper were in negative territory.

FORBES: Platinum Outperforming Other Metals, Lifted By South African Supply Concerns

Based in Pheonix, Phelps Dodge has copper mining operations in the U.S., Chile, Peru and Congo, while New Orleans-based Freeport operates the vast open-pit Grasberg gold, copper, and silver mine in Indonesia, and has reserves of about 37 billion pounds of copper and 40 million ounces of gold.

FORBES: Freeport To Buy Phelps Dodge For $26B

On Jan. 15, Wheaton announced it will acquire interests in the Bajo de la Alumbrera gold-copper mine in Argentina and the Peak gold mine in Australia.

FORBES: Magazine Article