In iron-removal from china stone,it has obtained satisfactory results with highyield of refined china clay and its product has reached the standards of Grade 1 china stone。
用该机进行瓷石除铁,效满意。泥产,量达到一级瓷石产品的要求。
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This area once produced tin and copper and china clay, but all you can see of the mines now are now abandoned shells.
这个地区曾经、铜和土,但能看到的矿山都是废弃的贝壳。
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