the business: coltan -- short for columbite-tantalite -- is an ore that takes on heat-resistant properties when it gets refined.
商业:Coltan(钶钽铁矿,columbite-tantalite的缩写)是一种在经过提炼后能获得耐热性的铁矿。
at one time, nigeria was the world's largest exporter of columbite .
尼一度曾是世界上最大的钶铁矿出口国。
on the basis of detailed studies on columbite from the suzhou granite, tantalite has been found for the first time in this granite.
本文在研究苏州花岗岩中铌铁矿的基础上,首次在该地区发现了钽铁矿。
The measurement indicates that the optimized performance can be achieved by three-element composite columbite precursor methods.
性能测试结果表明,三组元复合先驱体法制成样品的性能最佳.
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