In this paper,a new small-sized bit is introduced.The bit is mainly composed of a biassed polyconic cutter,a cylindric roller and two bit legs.
文章介绍了种新型小尺寸钻头,它主要由个偏置的牙和个圆柱及两个牙掌组成。
In this paper,a new small-sized bit is introduced.The bit is mainly composed of a biassed polyconic cutter,a cylindric roller and two bit legs.
文章介绍了种新型小尺寸钻头,它主要由个偏置的牙和个圆柱及两个牙掌组成。
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