短語詞組短語nonnegative integer [數(shù)]非負(fù)整數(shù)Nonnegative ? 非負(fù)數(shù);非負(fù)的nonnegative ? 非負(fù)的nonnegative constants 非負(fù)常數(shù)nonnegative irreducible 非負(fù)不可約almost nonnegative 幾乎非負(fù) 返回 nonnegative