炼铁

a method of smelting iron

一种炼铁方法

Iron manufacturing also gradually began to develop in the colonial era.

在殖民地时代，炼铁业也开始逐步发展。

Using coke in iron ore reduction produces copious quantities of airborne particulates.

炼铁过程中使用焦炭，会在空中形成大量的悬浮粒子。

The smiths kindled fires in their forges.

铁匠们点着炼铁炉。

For example, the ancient Egyptians, more than 3,000 years ago, had learned skill in working iron.

比如三千多年前的古埃及人已经学会了炼铁术。