不定方程 bù dìng fāng chéng 🔊 indeterminate equation + Keep this word Meanings bù dìng fāng chéng (math.) indeterminate equation Its characters 不bùnot; noHSK 1定dìngto fix; to set; to make definiteHSK 4方fāngsquareHSK 5程chéngrule