Silver-plated copper center conductor for smooth, detailed sound production.

镀银中心铜导体的顺利，详细的生产。

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Women shop in Old Delhi's bustling Chawri Bazaar, a commercial center specializing in brass, copper, and paper products. Photograph by Caleb kenna.

妇女们在德里熙熙攘攘的Chawri集市购物，这是一个专门销售铜制品和纸制品的商业中心。

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Archaeology students examine Khirbat en Nahas, an ancient copper-smelting center south of the Dead Sea.

考古专业的学生们正在检查克巴特·恩-纳哈斯遗址，这里是位于死海以南的一处古老铜冶炼中心。

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He had experience representing Western mining interests in Mongolia, whose vast, untapped reserves of copper, gold, and coal are at the center of an international scramble.

NEWYORKER: Bones of Contention

The modernist structure is built of concrete and glass, with an undulating copper roof that rises to an open semi-circle at its center.

FORBES: Bob and Dolores Hope. Source: Hope Family