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关注：1
2013-05-23 12:21
求翻译：to improve the economics, technology and flexibility of the melt flow system carburization and desulphurization of iron melts are needed, which allowing the use of cheaper raw materials and preventing hard castings是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
to improve the economics, technology and flexibility of the melt flow system carburization and desulphurization of iron melts are needed, which allowing the use of cheaper raw materials and preventing hard castings
问题补充： |
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