Whether it is oil, corn, iron ore, coal, cotton or copper, prices are falling quickly.
不管是石油、玉米、铁矿石、煤炭、棉花还是铜，价格都在快速下跌。
The treasures are not copper or coal.
这些宝藏不是铜矿或煤矿。
This may lead him to explore other metals-copper, perhaps, or gold.
他也开发了其他金属材质-铜或金。
这管子是铜的呢还是铅的？
Single-stranded copper core can be provided fire retardant safety wire joint or tin coat.
单股铜芯线可采用阻燃型安全压线帽或刷锡。
Single-stranded copper core can be provided fire retardant safety wire joint or tin coat.
单股铜芯线可采用阻燃型安全压线帽或刷锡。
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