They had been using a relatively new technology called X-ray spectroscopy, and they were using this to examine an ore sample.

他们使用了一种相对较新的 X 光技术来检测矿石样品。

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The workers separate a metal from an ore.

工人们从矿石中提炼出金属。

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A black mineral that is an ore of niobium and '.

一种黑色矿物，是铌、钽矿石。

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It's magical.It's sorcery to take an ore and convert it to metal. It's magic. It still amazes me today.

非常神奇，采取矿石并将其转变为,金属非常神奇，我现在仍然很吃惊。

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An ore of which there was bountiful amounts lying around in Australian deserts.

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The oxide (which comes from an ore called coltan) is converted to a fluoride using hydrofluoric acid, and the fluoride is then reduced with liquid sodium.

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People survive either from agriculture or from small-scale mining of gold or colombo-tantalite, an ore used in mobile phones that makes its way to the outside world through Uganda or Rwanda.

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