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

在这颗行的中心是一个巨大的液态镍铁核。

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“”非常大的的小行，足以满足全球几万年的镍铁需求。

And then Thomas Edison introduced the nickel-iron battery.

托马斯·爱迪生推出了镍铁电池。

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

镍铁陨石，换句话说，金属，也可以看起来是红色的。

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

来，他又回到电力行业，发明了镍铁碱性电池。

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

地球的核心被认为由一个坚固的镍铁中心和一个熔融的外层组成。