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| 51. | malleable pig iron |
| 轫性铸铁 |
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| 52. | Coke, pig iron, steel; Building materials, machinery electrical equipment. |
| 焦碳，生铁，钢材；建筑材料，机械电器设备。 |
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| -- 来源 -- 1-11000095147.energy-brand.cn |
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| 53. | The chemical principle of oxidation is employed to convert pig iron into steel. |
| 把生铁炼成钢是利用化学上的氧化原理。 |
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| 54. | One way to do this is by using an open hearth furnace, where pig iron and scrap steel are heated . |
| 炼钢的一种方法是将生铁和废钢放在平炉内加热。 |
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| 55. | Blast Furnace: Use iron ore from the mines to make pig iron for you weapons. |
| 鼓风炉：铁矿石在这里炼成生铁，可以用来制造武器。 |
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| 56. | A furnace in which pig iron is converted into steel by the Bessemer process. |
| 炼钢熔炉一种通过酸性转炉法将生铁练成钢的设备 |
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| 57. | Pig iron is converted into steel by removing most but not all the impurities. |
| 生铁变成钢要除掉大部分而不是全部的杂质。 |
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| 58. | specular pig iron |
| 镜铁 |
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| 59. | Pig iron: Crude iron obtained directly from the Blast furnace and cast in molds. |
| 生铁:从高炉直接炼得并在模中铸出的粗铁。 |
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| 60. | "One way to do this is by using an open-hearth furnace, where pig iron and scrap steel is heated. " |
| 炼钢的一种方法是将生铁和废钢放在平炉内加热。 |
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