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| 81. | cast iron washer |
| 生铁垫圈 |
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| 82. | In fact the charge may consist entirely of steel scrap with no pig iron at all. arc furnaces are used |
| 实际上炉料可以完全是废钢，不用生铁。电弧炉用来生产高质碳素钢和合金钢，其容积可达400吨。 |
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| 83. | blase furnace cast iron |
| 高炉生铁 |
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| 84. | This is not always true-as with the manufacture of pig iron and steel from low-grade iron ores-but it |
| 并非一概如此―例如从低级铁矿石中生产生铁和钢材的情况一但是这导致了工业发展集中在煤田上。 |
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| 85. | cast iron mower |
| 生铁割草机 |
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| 86. | open-hearth iron |
| 平炉生铁 |
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| 87. | sand mo(u)ld pig iro |
| 砂型生铁 |
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| 88. | austenite cast iron |
| 奥氏体生铁 |
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| 89. | cast iron stove range |
| 生铁灶 |
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| 90. | 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。所以任何一种炼钢方法都必须为精炼的钢水供给一定量的氧。 |
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