单词	transformation of polarity
释义
随便看	A命题 A型特殊星 a扩张 A稳定性 a等价 A*算法 (a，b)因子 Babylonian numerals back and forth method Backlund transformation Backlund transformation back propagation model back propagation network back substitution process backtracking backward continuation theorem backward difference backward difference methods backward difference operator backward elimination procedure backward scattering backward stochastic differential equation Baer group Baer-Levi semigroup Baer-nilpotent group

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