V-shape cutting geometry with staircase blades for constant and quick cutting.
动刀呈V形阶梯排列，粉碎物渐次进入，切削平稳轻快。
Musical Instrument Industry: Instrument three-dimensional surface engraving, shape cutting.
乐器行业：可雕刻乐器三维曲面、外形切割。
Musical Instrument Industry: Instrument three-dimensional surface engraving, shape cutting.
乐器行业：可雕刻乐器三维曲面、外形切割。
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