1. French curve：French coil 并列排绳法 | French curve 曲线板 | French curve 曲线规
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2. Kurvenlineal n：Winkelmesser m. 量角器,半圆仪 | Kurvenlineal n.曲线板 | Zeichenmaschine f. 绘图仪
3. drawing curve：制图圆规 drawing compasses | 曲线板 drawing curve | 加工装置检修停运 drawing fires
4. 曲线板的解释
4. curve：curve tube pressure balance expansion joint 曲管压力平衡伸缩接头 | curve 曲线板 | curve-drawing instrument 曲线绘制仪