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关注:1
2013-05-23 12:21
求翻译:Overall 5.6Mt of ore have been mined for 56,000t of tin metal at an average grade of 1.4% SnO2.是什么意思? 待解决
悬赏分:1
- 离问题结束还有
Overall 5.6Mt of ore have been mined for 56,000t of tin metal at an average grade of 1.4% SnO2.
问题补充: |
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