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| 圆角半径，R规; 半径圆弧样板 | |||
| 圆角〔R,半径〕规 | |||
| 半径量规用于凹凸弧段 | |||
| 圆角样板 | |||
| 圆角规; 曲度规; 半径样板; 半径量规; 半径规 | |||
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