短語詞組短語tangent perpendicular to radius 圓的切線tangent t to 相切tangent adjacent to switch rail 緊接尖軌的直線tangent plane to a surface 曲麪的切平麪Tangent to PS 相切於零件麪tangent to spiral 螺鏇曲線起點Tangent to Bend 與折彎相切 返回 tangent to