In theory, you need molten iron in the core to generate one, but Mercury is so small, its core should have long since solidified.

理论上，你需要核心里的熔化铁来产生它，但是水星很小，它的核心凝固还要很久。

The molten iron will come out.

铁水就要出来了。

It is used to contain molten iron and slag.

其作用是容纳铁水和炉渣。

Tilt the ladle slowly to provide constant controlled flow of molten iron.

慢慢地倾斜钢水包，铁水流速稳定可控。

The outer core of the Earth, about two-thirds of the way to the center, is molten iron.

地球的地核外部，大致到达中心三分之二的地方是熔化的铁。