力量,肯切,中肯
Cogency \Co"gen*cy\, n. [See {Cogent}.] The quality of being cogent; power of compelling conviction; conclusiveness; force. An antecedent argument of extreme cogency. --J. H. Newman.
cogency n 1: persuasive relevance 2: the quality of being logically valid [syn: {validity}, {rigor}, {rigour}]