关键词:大型齿轮;螺旋线偏差;圆光栅 [gap=324]Key words: Large gear; Spiral deviation; Radial grating
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micro radial grating 微型圆光栅
metric radial grating 计量圆光栅
Metrological radial grating 计量圆光栅
high density radial grating 高密度圆光栅
Circular and radial grating 圆环栅和射线栅
Radial metal grating 金属光栅盘
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