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介绍了洛阳矿山机械研究所近期开发研制的QZD-200型硬岩球齿滚刀的结构、技术性能及在高层建筑桩基施工中的应用。
The structure, technical performance and application of QZD-200 hard rock spline hob developed recently by Luoyang Mining Machinery Research Institute are introduced.