... 同心圆迭纹 concentric moire fringe 同心标度 concentric scale 同心度量规 concentricity gauge ...
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... 偏心刻度 eccentric scale 同心刻度 concentric scale 同心刻度盘 concentric dial ...
基于1个网页-相关网页
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The scales of the trays of two ruler take days as scale unit, and the scales are respectively distributed around two concentric circles.
两个尺盘的刻度均以日为刻度单位,且分别成圆周状布置在两个同心圆上。
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