二次曲线 Traditional 二次曲線 èr cì qū xiàn 🔊 quadratic curve (geometry) + Keep this word Meanings èr cì qū xiàn 二次曲線 quadratic curve (geometry)conic Its characters 二èrtwoHSK 1次cìnext in sequenceHSK 2曲qǔtuneHSK 6线xiànthreadHSK 6