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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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The shape of a plane is formed by two-dimensional space.
面是二维空间所构成的形。
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The shape of a plane is formed by two-dimensional space.
面是二维空间所构成的形。
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