短語詞組短語center of normal curvature [數(shù)]法曲率中心center of principal curvature 助率中心principal center of curvature [數(shù)]主曲率中心center of spherical curvature 球曲率中心center of geodestic curvature [測]測地曲率中心absolute center of curvature 絕對曲率中心the local center of curvature 局部曲率中心 返回 center of curvature