英语词汇“equivalence”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	equivalence
释义	equivalence /i kwiv"euh leuhns/ or, for 3, /ee'kweuh vay"leuhns/, n. 1. the state or fact of being equivalent; equality in value, force, significance, etc. 2. an instance of this; an equivalent. 3. Chem. the quality of having equal valence. 4. Logic , Math. a. Also called material implication. the relation between two propositions such that the second is not false when the first is true. b. Also called material equivalence. the relation between two propositions such that they are either both true or both false. c. the relation between two propositions such that each logically implies the other. adj. 5. (of a logical or mathematical relationship) reflexive, symmetrical, and transitive. Also, equivalency (for defs. 1, 2). [1535-45; < MF < ML aequivalentia, equiv. to L aequivalent- EQUIVALENT + -ia -IA; see -ENCE]
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