As Steelworkers, we are interested in the heattreatment of metals, because we have to know what effects the heat produced by welding or cutting has on metal.
钢铁工人最感兴趣的东西莫过于金属的热处理，因为我们得了解焊接与切割时产生的热对金属的影响。
2
Successful heattreatment requires close control over all factors affecting the heating and cooling of a metal.
热处理要想顺利进行，必须对所有影响金属加热与冷却的因素进行严格控制。
3
It includes a huge heat-treatment furnace, a crane that lifts hot metal plates without damaging them, and a computer system that can manage the complete flow of work.