At the planet's center is a huge liquid nickle-iron core.

在这颗行星的中心是一个巨大的铁核。

And the very large asteroid, 16 Psyche, could satisfy the entire global demand for nickel-iron for several million years.

而这颗名为“灵神星”非常大的的小行星，足以满足全球几百万年的铁需求。

And then Thomas Edison introduced the nickel-iron battery.

然后托马斯·爱迪生推出了铁电池。

Nickel-iron meteorites, in other words, metal, can also look red.

铁陨石，换句话说，金属，也可以是红色的。

Later, he returned to the power industry and invented the nickel-iron alkaline battery.

后，他又回到电力行业，发明了铁碱性电池。

The core of the Earth is thought to consist of a solid nickel-iron center with a molten outer layer.

地球的核心被认为是由一个固的铁中心和一层熔融的外层组成的。

This melts the ore at more than 1,500 degrees Celsius, producing a compound of nickel and iron called nickel pig iron, or NPI, much of which is in turn used to produce stainless steel.

这将矿石熔化至超过1500摄氏度，产生一种称为生铁（NPI）的铁化合物，其中大部分随后被用于生产不锈钢。