利用GPS全球定位系统和数字地图提供的道路曲率信息，提出了一种回旋曲线道路曲率平滑算法。
A clothoid curvature smoothing algorithm was presented according to the road curvature information from the GPS system and digital map.
利用回旋曲线的优良特性，将其做为压力容器部分半球形封头与圆柱筒体之间的过渡曲线，实现了在连接边缘上无附加边缘应力的光滑连接。
A clothoid curve is used with its fine feature for the shape of transition section between spherical head and cylindrical shell of pressure vessel.
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