curved drawing instrument
曲线板 curve board; curve gauge; curved drawing instrument; curved plate; drawing curve; freight curve; french curves; plotting board; ruler; spline form 熔线板 fuse board .
基于4个网页-相关网页
curved drawing instrument
曲线绘图仪
以上为机器翻译结果，长、整句建议使用 人工翻译 。