顺序数: ordinal number无序数: unordered tree序数词: ordinal numeral序数的: ordinal序数和: ordinal sum序数积: ordinal product序数类: ordinal number class序数列: ordinal series序数论: ordinalism; theory of ordinals序数幂: ordinal power异序数: singular ordinal有序数: ordered tree【化学】原子序数。: atomic number不可达序数: inaccessible ordinal不可数序数: uncountable ordinal超限序数: transfinite number; transfinite ordinal程序数据: program data程序数据传: program data transfer程序数据集: program data set(pds)程序数据库: program database; program date base低原子序数: low atomic number; low-atomic number非极限序数: nonlimiting ordinal分子序数: molecular number风险顺序数: risk priority number序数测度: ordinal measure序时账簿: book of chronological entry; chronological book