球面二次曲线的英文

• spheroconic

• 球面:    spherical surface; sphere
• 二次:    secondary; quadratic
• 曲线:    curve; curved line
• 平面二次曲线:    plane quadratic curve
• 二次曲线:    conic rho; conic section; curve of second order; quadratic curve; quafric curve; second-degree curve; secondary curve