短語詞組短語Double -Precision Number 雙倍精確數(shù)目;[計(jì)]雙精度數(shù);繙譯double -precision 雙精度;雙精度運(yùn)算;雙精確度;倍長操作double e precision number 雙精度數(shù)double e precision computation 雙精度計(jì)算 返回 double precision