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为了提高孔的加工质量,减轻劳动强度,提高劳动工效,根据发展的需要,设计制造了“双刃大吃刀深度扩孔钻”。
In order to improve the quality of processing holes, reduce labor intensity, improve labor efficiency, according to the needs of development, design and manufacture of a “double-edged knife deep reamer.”