Copper CU materials such as the marine valves.

铸铜CU等材质的船用阀门.

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Bimetal copper - cladding aluminum bars with different transition layers were manufactured by continuous casting.

在双金属连铸铜包铝复合棒坯试验中,出现不同过渡层的制品.

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Copper ores are mainly transported to copper workshop after smelt to copper ingot.

铜矿石开采后,多在开采地冶炼成铜锭后再运输到铸铜作坊.

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