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	alphanumeric block printer alphanumeric bookkeeping machine alpha numeric bookkeeping machine alphanumeric call sign alphanumericcharacter alphanumeric character alphanumeric, character alphanumeric character entry alphanumeric character recognition alphanumeric characters alphanumeric character set alphanumeric characterss alphanumeric character subset alphanumeric charaters alphanumeric class alphanumeric code alphanumeric code character set alphanumeric coded alphanumeric conversion code alphanumeric CRT display alphanumeric crt display equipment alphanumeric cursor alphanumeric data alphanumeric database management system alphanumeric data code