大的库存占用了很多钱云南铜业。
他也是铜业日报的出版商。
主导产业有，钨业、稀土业、铜业和银锡业四大产业。
The four main industries are tungsten, rare earth, copper and silver tin.
该矿已被自由港麦克·莫兰公司开挖了好几十年，这是一家美国铜金业巨头。
The mine has been dug out over decades by Freeport-McMoRan, the American copper-and-gold giant.
铺到每户的铜芯电话线路作为运输业运营商进行管制。
The copper telephone line that ran to every house was regulated as a common carrier.
铺到每户的铜芯电话线路作为运输业运营商进行管制。
The copper telephone line that ran to every house was regulated as a common carrier.
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