... mill run-out table轧机的输出辊道 mill scrap废钢 mill screw 轧机压下螺丝 ...
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rolling mill scrap 轧制生产切头
Soon, the mill began operations, swallowing scrap metal and then spitting out steel and smog.
很快，工厂开始运作，通过加工废金属生产钢铁，同时产生烟雾。
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An even lower-cost group of domestic producers are the mini-mill operators, such as Nucor, which make steel from scrap metal instead of iron ore.
ECONOMIST: Steel: Rust never sleeps | The
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