rational l number有理数
rational real number detail有理实数
rational prime number[数] 有理素数
rational real number[数] 有理实数
rational sampling number合理采样数
rational grey number有理灰数
rational rotation number有理转数
rational gray number有理灰数
The Unascertained Rational Number未确知有理数
N（名词） any real number of the form a/b, where a and b are integers and b is not zero, as 7 or 7/3 有理数