Other important African export commodities are iron ore and timber, followed by manganese, cobalt, copper and chromium.

其他重要的非洲出口商品是铁矿石和木材，其次还有锰、钴、铜和铬。

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Alloy steel owe their properties to the presence of one or more elements other than carbon, namely nickel, chromium, manganese, molybdenum, tungsten, silicon, vanadium, and copper.

合金钢的性质取决于其所含有的除碳以外的一种或多种元素，如镍、铬、锰、钼、钨、硅、钒和铜。

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Faced with a challenge from Mr Simon, Mr Ehrlich selected five metals-copper, chromium, nickel, tin and tungsten-whose prices he thought would rise in real terms over the following ten years.

面对西蒙的挑战，埃尔利希选择了铜，铬，镍，锡，和钨这5种金属，他认为这些金属在扣除物价因素后，价格在接下来的十年里会增长。

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