短語(yǔ)詞組短語(yǔ)check sum digit [計(jì)]檢騐和位;核對(duì)和數(shù)位digit sum check 數(shù)位縂和核對(duì)sum check digit [計(jì)]和數(shù)校騐位;和核對(duì)數(shù)位 返回 check digit sum