您要查找的是不是：
- Euler数Euler numbers
- 数to count
- 高阶Euler数Euler number of higher order
- Apostol-Euler数Apostol-Euler numbers
- Euler数和多项式Euler numbers and polynomials
- 高阶Apostol-Euler数Apostol-Euler number of higher order
- 行数linage
- 页数pagination
- 有数know exactly about sth.
- 数位digital
- 数个couple
- 为数amount to
- 可数名词countable
- 份数umber
- 数数spillikin
- 和数summation
- 模数modulus
- 频数frequence
- 记数numeration
- 层数number of plies
