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The key equipment of a pilot plant to produce ultra-fine tourmaline powder with jet mill and stirred ball mill is described.
本文主要利用以气流磨和搅拌磨为主体的超细粉碎中试线，对电气石超细粉体的制备工艺进行了探讨。
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This new type pilot cold rolling mill has been used successfully.
该新型冷轧实验轧机已经成功投入使用。
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