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關注：1
2013-05-23 12:21
求翻譯：in addition to using fly ash as a concrete additive, the technology is available to extract the main mineral components-aluminum,silicon,and magnetics.是什么意思？ 待解決
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- 離問題結束還有
in addition to using fly ash as a concrete additive, the technology is available to extract the main mineral components-aluminum,silicon,and magnetics.
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