充要条件 chōngyàotiáojiàn necessary and sufficient condition Definitions Defs Origin Strokes Stroke Words Sentences Sents 充要条件 充要條件 chōngyàotiáojiàn necessary and sufficient condition a condition that is both necessary and sufficient for a result to occur
充要条件 充要條件 chōngyàotiáojiàn necessary and sufficient condition a condition that is both necessary and sufficient for a result to occur
