variationaladj.变化的；变化性的；因变化而产生的variationn.变种；变奏曲；变动；变化variation rough sets变异粗集variation of symbols符号变异variation of tactics战术变化variation of umbrage树荫轨迹variational calculus变分法,变分学variational identity变分恒等式variational equation变分方程Variation of antigen抗原性变异variation in antigen抗原变异variational inequaliy变分不等式