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| 91. | Pig iron for steel making |
| GB/T717-1998炼钢用生铁 |
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| 92. | puddled pig iron |
| 搅炼炉用生铁 |
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| 93. | It is very brittle and difficult to work . |
| 生铁很脆，很难加工。 |
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| 94. | electrode melting rate |
| 焊条熔化率 |
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| 95. | pig iron containing a substantial proportion of slag. |
| 含有大量矿渣的生铁。 |
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| 96. | Foundry pig iron |
| GB/T718-1982铸造用生铁 |
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| 97. | Pig iron used for spherical graphite cast iron |
| GB/T1412-1985球墨铸铁用生铁 |
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| 98. | ectrode welding |
| 熔化极电弧焊 |
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| 99. | Then, what is pig iron ? |
| 那么，什么是生铁呢? |
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| 100. | ferrous metal melting process |
| 铁合金熔化工序 |
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