您要查找的是不是：
- Euler數Euler numbers
- 數to count
- 高階Euler數Euler number of higher order
- Apostol-Euler數Apostol-Euler numbers
- Euler數和多項式Euler numbers and polynomials
- 高階Apostol-Euler數Apostol-Euler number of higher order
- 行數linage
- 頁(yè)數pagination
- 有數know exactly about sth.
- 數位digital
- 數個(gè)couple
- 為數amount to
- 可數名詞countable
- 份數umber
- 數數spillikin
- 和數summation
- 模數modulus
- 頻數frequence
- 記數numeration
- 層數number of plies
