英语词汇“充分又必要条件”的翻译、意思、用法、释义-英汉汉英双解词典

词汇	充分又必要条件
释义	充分又必要条件 chōng fèn yòu bì yào tiáo jiàn如果有甲必有乙，无甲必无乙，那么甲就是乙的充分又必要条件。例如，三角形是等角的，则三角形是等边的，而只有三角形是等角的，三角形才是等边的。因此，三角形等角就是三角形等边的充分又必要条件。
随便看	lordstown lordstown syndrome Lord Strange's Men Lord Sutch Lord Temporal lord tennyson Lord Tennyson Lord,the house look a like a rummage sale,yes, Lord, the house look a like a rummage sale, yes Lord Todd lord treasurer LORD VALUE ADVANTAGE STOCK FUND Lordville lord waste lord wavell Lord Wavell Lord Well Lord William Grenville Lord,will I ever? No,nigger,never! Lord, will I ever? No, nigger, never Lord willing Lord willing and the creek don't rise lordwood lordy Loreille