熊熊燃烧的溶化金属的熔炉一直是出产钢产品的主要场所。
Flaming cauldrons of molten metal have long been the primary venus for steel production.
武冈冶锰熔炉是中国大型钢铁中心之一，钢里往往加入锰以增强它的韧度。
The Wugang manganese smelter is in one of China's major iron and steel centers. Manganese is often added to steel to increase its tensile strength.
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