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为了节省昂贵的金钢石的消耗；本期特发表关于“利用硬质合金废料制成滚轮代替金钢石修正砂轮”的文章两篇。前一篇主要介招如何制造滚轮；後一篇则著重介绍滚轮的具体使用方法、使用的夹具和效能。希各厂参考试用；并将其结果告诉我们。
In order to save expensive consumption of diamonds; this issue of special issue on the “use of carbide scraps made of scrap instead of diamond correction wheel” two articles. The previous one mainly introduced how to make rollers; the latter one focused on the specific use of rollers, the use of fixtures and performance. Greek plant reference trial; and tell us the result.