tin-coatings on iron- and copper-materials 铁和铜材料上的锌镀层
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。
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。
China's strong economic growth and its hunger for raw materials such as copper, iron ore and aluminium have provided the foundations for sharp rises in commodities prices over the past five years.
中国强劲的经济增长，及其对铜、铁矿石和铝等原材料的强烈需求，提供了大宗商品价格在过去5年迅速上涨的基础。
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