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| 31. | Pig iron may contain 4% of carbon. |
| 生铁约含有4%的碳。 |
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| 32. | mottled pig iron |
| 麻口生铁;麻口铁 |
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| 33. | silvery pig iron |
| 高硅生铁;高炉硅铁 |
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| 34. | Pig iron used for spherical graphite cast iron |
| GB/T1412-1985球墨铸铁用生铁 |
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| 35. | synthetic pig iron |
| 再制生铁;再制铁 |
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| 36. | pig iron made entirely from ore. |
| 完全由矿石提炼的生铁。 |
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| 37. | Then, what is pig iron ? |
| 那么，什么是生铁呢? |
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| 38. | pig iron containing a substantial proportion of slag. |
| 含有大量矿渣的生铁。 |
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| 39. | Pig iron for steel making |
| GB/T717-1998炼钢用生铁 |
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| 40. | Pig iron-Sampling for chemical analysis |
| GB/T719-1984生铁化学分析用试样制取方法 |
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