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| 61. | Pig iron used for spherical graphite cast iron |
| GB/T1412-1985球墨铸铁用生铁 |
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| 62. | high iron metal heat |
| 大量生铁熔铁 |
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| 63. | scrap and pig process |
| 生铁废钢炼钢法 |
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| 64. | Foundry pig iron |
| GB/T718-1982铸造用生铁 |
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| 65. | He is used to pigging it with the poultry. |
| 他习惯于住在饲养家禽的肮脏环境中. |
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| 66. | pig iron containing a substantial proportion of slag. |
| 含有大量矿渣的生铁。 |
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| 67. | puddled pig iron |
| 搅炼炉用生铁 |
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| 68. | Then, what is pig iron ? |
| 那么，什么是生铁呢? |
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| 69. | It is very brittle and difficult to work . |
| 生铁很脆，很难加工。 |
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| 70. | Pig iron for steel making |
| GB/T717-1998炼钢用生铁 |
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