equivalence law等价定律equivalencen.相等；等值equivalence of fatigue damage疲劳损伤等效equivalence point of titration[化] 滴定等当点equivalence problem of grammar文法的等价问题equivalence central projection等效中心投影equivalence of mass and energy质能等效equivalence Martingales measure等价鞅测度equivalence of women and nature自然与女性的等值equivalence in value and effect等值等效equivalence of optimal relevance最佳关联性equivalence-defining statement等价定义语句