不变 Traditional 不變 bù biàn 🔊 constant + Review this word Meanings bù biàn 不變 constantunvarying(math.) invariant Its characters 不bùnot; noHSK 1变biànto changeHSK 3 Words with 不变 不变资本 bù biàn zī běn constant capital 一成不变 yī chéng bù biàn immutable HSK 7–9 不变价格 bù biàn jià gé fixed price 不变量 bù biàn liàng invariant quantity 亘古不变 gèn gǔ bù biàn unchanging since times immemorial (idiom)